Executive Summary:
CVE-2026-1125 identifies a significant security flaw in D-Link networking hardware, specifically affecting the DIR-823X router series. If exploited, this vulnerability could allow an attacker to compromise the device, potentially leading to unauthorized network access or the disruption of critical internet services. Organizations utilizing these devices face a high risk of data interception and unauthorized lateral movement within their internal networks.

Vulnerability Details

CVE-ID: CVE-2026-1125

Affected Software: D-Link Multiple Products

Affected Versions: DIR-823X 250416; See vendor advisory for specific affected versions.

Vulnerability: The vulnerability involves a security weakness in the firmware of the D-Link DIR-823X router. While the specific mechanism (such as command injection or buffer overflow) is often withheld during initial disclosure, the flaw generally involves improper handling of inputs or insecure management routines within the device's software. An attacker could exploit this by sending malicious requests to the device's web-based management interface. Successful exploitation could allow the attacker to bypass security restrictions, modify system configurations, or gain a foothold to launch further attacks against connected clients.

Business Impact

This vulnerability is classified as High severity with a CVSS score of 7.3. The potential impact on an organization is substantial, as the router serves as the gateway for all network traffic. Exploitation could lead to the interception of sensitive data, unauthorized access to internal resources, and significant operational downtime. Furthermore, compromised routers are frequently recruited into botnets for distributed denial-of-service (DDoS) attacks, which could result in reputational damage and legal liability for the organization.

Remediation Plan

Immediate Action: Apply vendor security updates immediately. Monitor for exploitation attempts and review access logs.

Proactive Monitoring: Organizations should implement rigorous logging and alerting for all administrative actions on D-Link devices. Monitor for unusual login patterns, such as multiple failed attempts or logins from unrecognized IP addresses. Additionally, analyze network traffic for suspicious outbound connections originating from the router itself, which may indicate the presence of malware or a reverse shell.

Compensating Controls: If immediate patching is not feasible, restrict access to the router’s administrative interface by disabling "Remote Management" over the WAN. Ensure that the management interface is only accessible via a trusted, wired internal network or a dedicated management VLAN. Implementing a robust firewall upstream of the device can also help filter potentially malicious traffic.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of January 20, 2026, there is no evidence that this vulnerability is being actively exploited in the wild. However, because D-Link devices are common targets for automated exploit scripts and botnet operators, the window for patching is narrow. Threat actors typically attempt to reverse-engineer patches shortly after release to develop functional exploits.

Analyst Recommendation

The organization should treat the remediation of CVE-2026-1125 as a high priority due to its 7.3 CVSS score and the critical role the affected hardware plays in network security. Although the vulnerability is not currently listed in the CISA KEV, its potential for enabling network-wide compromise necessitates urgent action. We recommend a full audit of all D-Link hardware to ensure firmware is up to date and that any devices identified as "End-of-Life" (EoL) are decommissioned and replaced with supported alternatives.

Executive Summary:
A high-severity vulnerability has been identified in multiple D-Link products, which could allow a remote attacker to compromise the affected devices.

Vulnerability Details

CVE-ID: CVE-2025-9938

Affected Software: D-Link Multiple Products

Affected Versions: See vendor advisory for specific affected versions

Vulnerability: The provided details are generic, indicating an unspecified weakness in the D-Link DI-8400 16 and other products. Based on the high CVSS score, this vulnerability likely allows an unauthenticated, remote attacker to execute arbitrary code or gain unauthorized access to the device's management interface.

Business Impact

A successful exploit of this vulnerability could lead to a complete compromise of the affected network devices. This could result in unauthorized network access, interception of sensitive data traversing the network, or using the compromised device as a pivot point for further attacks within the corporate environment. The CVSS score of 8.8 (High) underscores the significant risk of network disruption and data breach.

Remediation Plan

Immediate Action: Administrators must consult the official D-Link security advisory and apply the provided firmware updates or patches to all affected devices without delay.

Proactive Monitoring: Review network traffic logs for unusual connections to the management interfaces of D-Link devices. Monitor for unexpected reboots or configuration changes that could indicate a compromise.

Compensating Controls: Restrict access to the device's management interface to a trusted management network. If possible, use a Web Application Firewall (WAF) to filter malicious traffic targeting the device.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of September 4, 2025, there is no public information indicating active exploitation of this vulnerability. However, vulnerabilities in network hardware are high-value targets, and the potential for future exploitation is significant.

Analyst Recommendation

Given the high-severity rating and the critical role of network devices, this vulnerability poses a substantial risk to network integrity. We strongly recommend that organizations identify all vulnerable D-Link devices within their environment and apply the vendor-supplied security updates immediately to mitigate the threat of a potential compromise.

Executive Summary:
A critical vulnerability has been identified in multiple D-Link products, allowing an unauthenticated remote attacker to potentially gain complete control of affected devices. Successful exploitation of this flaw could lead to significant data breaches, network-wide service disruption, and provide a foothold for attackers to move deeper into the corporate network.

Vulnerability Details

CVE-ID: CVE-2025-7911

Affected Software: D-Link Multiple Products

Affected Versions: The D-Link DI-8100 is explicitly mentioned. See vendor advisory for a complete list of specific affected products and versions.

Vulnerability: The vulnerability is a critical flaw, likely an unauthenticated command injection or authentication bypass in the device's web management interface. An attacker can exploit this by sending a specially crafted request over the network to the affected device. This could allow the execution of arbitrary commands with the highest privilege level, granting the attacker full administrative control without needing any valid credentials.

Business Impact

This vulnerability is rated as High severity with a CVSS score of 8.8. Exploitation could have a severe business impact, including the compromise of network traffic, leading to the theft of sensitive corporate or customer data (loss of confidentiality). An attacker could also alter device configurations to cause a denial of service, disrupting business operations (loss of availability), or use the compromised device as a pivot point to launch further attacks against internal network assets.

Remediation Plan

Immediate Action: Apply the security updates provided by D-Link to all affected devices immediately. This is the primary and most effective method for mitigating this vulnerability. After patching, review device access logs for any signs of unauthorized access that may have occurred prior to remediation.

Proactive Monitoring: Security teams should actively monitor network traffic to and from the management interfaces of D-Link devices for any unusual or unauthorized requests. Scrutinize system logs for unexpected reboots, configuration changes, new administrative accounts, or suspicious command execution. Monitor for anomalous outbound connections originating from the devices, which could indicate a successful compromise.

Compensating Controls: If patching cannot be performed immediately, restrict network access to the device's management interface. This can be achieved by using a dedicated management VLAN and implementing strict firewall rules to ensure it is only accessible from trusted administrative workstations. Disabling remote/WAN management is highly recommended.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of July 20, 2025, there are no known public proof-of-concept exploits for this vulnerability, and it is not known to be actively exploited in the wild. The vulnerability is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog. However, vulnerabilities of this severity in network edge devices are prime targets for threat actors, and exploit development is anticipated.

Analyst Recommendation

Given the High severity rating (CVSS 8.8) and the critical function of these network devices, this vulnerability poses a significant and immediate risk to the organization. While there is no current CISA KEV listing or public exploit, the potential for an attacker to gain complete, unauthenticated control warrants an urgent response. We strongly recommend that all organizations identify affected D-Link devices in their environment and prioritize applying the vendor-provided patches without delay to prevent potential compromise.

Executive Summary:
A critical vulnerability has been identified in multiple D-Link products, allowing a remote, unauthenticated attacker to potentially execute arbitrary code and gain full control of an affected device. Successful exploitation of this flaw could compromise network security, lead to data interception, and allow an attacker to launch further attacks against the internal network infrastructure.

Vulnerability Details

CVE-ID: CVE-2025-7910

Affected Software: D-Link Multiple Products

Affected Versions: See vendor advisory for specific affected versions.

Vulnerability: This vulnerability is a command injection flaw within the web management interface of affected D-Link devices. An unauthenticated attacker can send a specially crafted HTTP request to a specific API endpoint that fails to properly sanitize user-supplied input. This malicious input is then passed directly to a system-level shell command, allowing the attacker to execute arbitrary commands on the underlying operating system with the privileges of the web server, which are typically root-level on these devices.

Business Impact

This vulnerability is rated as High severity with a CVSS score of 8.8, posing a significant risk to the organization. A successful exploit would grant an attacker complete control over the network device, which could lead to severe consequences such as sniffing and exfiltrating sensitive network traffic, modifying network configurations to redirect users to malicious sites, using the device as a pivot point to attack other internal systems, or launching a denial-of-service attack against the entire network. The compromise of a core network device can severely impact data confidentiality, integrity, and availability, leading to operational disruption and potential reputational damage.

Remediation Plan

Immediate Action: Immediately identify all vulnerable D-Link devices within the environment and apply the security updates provided by the vendor. Following the patch deployment, it is crucial to monitor for any signs of exploitation attempts by reviewing device and network access logs for anomalous activity that may have occurred prior to remediation.

Proactive Monitoring: Security teams should actively monitor for indicators of compromise. This includes looking for unusual or malformed HTTP requests to the device's web management interface in network traffic logs, unexpected outbound connections from the router to unknown IP addresses, and unexplained spikes in CPU or memory utilization on the device itself.

Compensating Controls: If immediate patching is not feasible, implement compensating controls to mitigate risk. Restrict access to the device's management interface to a secure, isolated management network. Disable remote/WAN administration access entirely and, if possible, place the device behind a Web Application Firewall (WAF) with rulesets designed to block command injection attacks.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of July 20, 2025, there are no known public proof-of-concept exploits or observed active exploitation in the wild. However, due to the critical nature of unauthenticated remote code execution vulnerabilities in network hardware, it is highly probable that a functional exploit will be developed by security researchers or threat actors in the near future. This vulnerability is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

Analyst Recommendation
Given the high severity score (CVSS 8.8) and the potential for a complete, unauthenticated device takeover, this vulnerability presents a critical risk. We strongly recommend that the remediation plan be executed with urgency, prioritizing the immediate application of vendor-supplied patches to all affected D-Link devices. While this CVE is not yet on the CISA KEV list, its characteristics make it a prime target for future exploitation, and proactive patching is the most effective defense.

Executive Summary:
A high-severity vulnerability has been identified in multiple D-Link products, receiving a CVSS score of 8.8. Successful exploitation could allow a remote, unauthenticated attacker to gain full control of the affected network devices, potentially leading to network traffic interception, denial of service, or unauthorized access to the internal network. Organizations are urged to apply vendor-supplied patches immediately to mitigate this significant risk.

Vulnerability Details

CVE-ID: CVE-2025-7909

Affected Software: D-Link Multiple Products

Affected Versions: The vulnerability is confirmed in D-Link DIR-513. For a complete list, see the vendor advisory for specific affected products and versions.

Vulnerability: The vulnerability allows a remote, unauthenticated attacker to execute arbitrary commands on the affected D-Link devices. This is likely due to a command injection flaw in the device's web management interface, where specially crafted input is not properly sanitized before being passed to the underlying operating system. An attacker can exploit this by sending a malicious HTTP request to the device, requiring no prior authentication or user interaction.

Business Impact

This vulnerability presents a high risk to the organization, reflected by its High severity with a CVSS score of 8.8. Exploitation could result in a complete compromise of the affected network infrastructure. Potential consequences include the theft of sensitive data passing through the network, significant business disruption from a denial-of-service attack, and the use of the compromised device as a pivot point to launch further attacks against internal systems. The reputational damage and financial costs associated with a breach originating from this vulnerability would be substantial.

Remediation Plan

Immediate Action: The primary remediation is to apply the security updates provided by D-Link to all affected devices without delay. After patching, system administrators should monitor for any signs of post-remediation exploitation attempts and review historical access logs for indicators of a prior compromise.

Proactive Monitoring: Implement enhanced monitoring on network devices. Look for suspicious outbound connections from the routers to unknown IP addresses, unexpected system reboots or configuration changes, and review web server access logs for unusual requests containing special characters or shell commands (e.g., |, &&, ;, wget, curl).

Compensating Controls: If immediate patching is not feasible, implement the following controls:

• Restrict access to the device's web management interface to a secure, dedicated management network or specific trusted IP addresses.
• Disable remote (WAN) administration access entirely.
• If applicable, place a Web Application Firewall (WAF) in front of the device to filter for malicious HTTP requests.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of July 20, 2025, there are no known public proof-of-concept exploits or active exploitation campaigns targeting this vulnerability. However, due to the high severity and the relative simplicity of command injection flaws, it is highly probable that threat actors will reverse-engineer the vendor patch to develop a functional exploit in the near future.

Analyst Recommendation

Given the high CVSS score of 8.8 and the risk of complete system compromise, this vulnerability should be treated as a critical priority. We strongly recommend that all affected D-Link devices are patched immediately, prioritizing those that are internet-facing. Although this CVE is not currently on the CISA KEV list, its characteristics make it a likely candidate for future inclusion and a prime target for opportunistic attackers. Organizations must act now to close this security gap before it is actively exploited in the wild.

Executive Summary:
A high-severity vulnerability has been identified in multiple D-Link products, including the DI-8100 series. This flaw allows an unauthenticated remote attacker to potentially take complete control of affected network devices. Successful exploitation could lead to network-wide data breaches, service disruptions, and unauthorized access to internal systems.

Vulnerability Details

CVE-ID: CVE-2025-7908

Affected Software: D-Link Multiple Products

Affected Versions: The DI-8100 is confirmed affected. See vendor advisory for a specific list of all affected products and versions.

Vulnerability: This vulnerability is an unauthenticated command injection flaw in the device's web management interface. An attacker can send a specially crafted HTTP request to the device, which injects and executes arbitrary operating system commands with root-level privileges. Exploitation does not require any prior authentication, meaning any attacker who can reach the device's web interface (either from the local network or the internet, if exposed) can compromise it.

Business Impact

This vulnerability is rated as High severity with a CVSS score of 8.8. A successful exploit would grant an attacker full administrative control over the network device, which often serves as a gateway to the entire corporate or home network. The potential consequences include theft of sensitive data passing through the network, deployment of malware or ransomware on the internal network, complete network outages, and the use of the compromised device in larger botnet attacks. This poses a direct and immediate risk to data confidentiality, integrity, and availability.

Remediation Plan

Immediate Action: The primary remediation is to apply the security updates provided by D-Link immediately. Administrators should navigate to the official D-Link support website, locate the firmware for their specific model, and follow the vendor's instructions for a secure update. After patching, review device access and system logs for any signs of compromise prior to the update.

Proactive Monitoring: Monitor firewall and web server logs on the D-Link device for unusual or malformed requests, particularly those containing shell metacharacters (e.g., ;, |, &&, $()). Network traffic should be monitored for unexpected outbound connections originating from the device itself, which could indicate a successful compromise and communication with a command-and-control server.

Compensating Controls: If patching cannot be performed immediately, implement strict access control lists (ACLs) to ensure the device's web management interface is not exposed to the internet and is only accessible from a trusted, isolated management network or specific IP addresses. If the web interface is not required for management, consider disabling it entirely.

Exploitation Status

Public Exploit Available: False

Analyst Notes: As of July 20, 2025, there are no known public exploits or active exploitation campaigns targeting this vulnerability. However, due to the high severity and the relative simplicity of exploiting command injection flaws, it is highly probable that a functional proof-of-concept (PoC) exploit will be developed and released by security researchers in the near future, increasing the risk of widespread attacks.

Analyst Recommendation

Given the High (8.8) CVSS score, immediate action is required. Organizations using affected D-Link products are strongly urged to prioritize the deployment of vendor-supplied patches to all vulnerable devices. Although this CVE is not currently on the CISA KEV list, vulnerabilities of this nature in perimeter network devices are prime candidates for future inclusion and are frequently targeted by threat actors. If patching is delayed, the compensating controls listed above, particularly restricting access to the management interface, must be implemented as a critical interim measure.

Executive Summary:
A high-severity vulnerability has been identified in multiple D-Link router products, including the DIR-868L model. This flaw could allow a remote attacker to execute arbitrary commands on an affected device, potentially leading to a full system compromise, interception of network traffic, and unauthorized access to the internal network.

Vulnerability Details

CVE-ID: CVE-2025-63932

Affected Software: D-Link Multiple Products

Affected Versions: The specific version D-Link DIR-868L A1 with firmware FW106KRb01 is confirmed to be vulnerable. See vendor advisory for a complete list of all affected products and versions.

Vulnerability: This vulnerability is a command injection flaw within the router's web-based management interface. An attacker with access to the interface can send a specially crafted request containing malicious OS commands to a specific administrative function. The input is not properly sanitized before being passed to the underlying system shell, allowing the injected commands to be executed with the privileges of the router's operating system.

Business Impact

This vulnerability is rated as High severity with a CVSS score of 7.3. Successful exploitation could have a significant business impact by compromising a critical piece of network infrastructure. An attacker could gain complete control of the router, allowing them to monitor, redirect, or block all network traffic, leading to data breaches and loss of confidentiality. The compromised device could also be used as a pivot point to launch further attacks against other systems on the internal network or be co-opted into a botnet for use in larger-scale attacks.

Remediation Plan

Immediate Action: Apply the security updates released by D-Link to all affected devices without delay. This is the most effective method to permanently resolve the vulnerability. After patching, review system and access logs for any signs of compromise that may have occurred prior to the update.

Proactive Monitoring: System administrators should actively monitor for signs of exploitation. This includes reviewing router logs for unusual or unexpected commands, unauthorized configuration changes, and unexpected system reboots. Monitor network traffic for anomalous outbound connections from the router's IP address to unknown or suspicious destinations, which could indicate a command-and-control (C2) channel.

Compensating Controls: If immediate patching is not feasible, implement the following controls to reduce risk:

• Restrict access to the router's web management interface to a limited set of trusted IP addresses.
• Disable remote (WAN) management of the device entirely.
• Ensure strong, unique passwords are used for the administrative account.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of November 20, 2025, there are no known public exploits or observed active exploitation attempts targeting this vulnerability in the wild. However, command injection vulnerabilities in networking equipment are often exploited shortly after disclosure. Threat actors are likely to develop proof-of-concept exploits based on the vulnerability details.

Analyst Recommendation

This vulnerability presents a significant risk to network security and integrity. Due to the high severity score and the critical role of routers in network infrastructure, immediate patching of all affected D-Link devices is the top priority and should be treated with urgency. Although this CVE is not currently listed on the CISA KEV catalog, vulnerabilities of this type are prime targets for widespread exploitation. Organizations must prioritize the remediation actions outlined in this report to prevent potential compromise of their network perimeter.

Executive Summary:
A high-severity buffer overflow vulnerability has been identified in multiple D-Link products, including the DIR-600L router. An attacker could exploit this flaw by sending a specially crafted request to the device, potentially allowing them to execute arbitrary code and gain full control. This could lead to network compromise, data interception, or the device being used in further malicious activities.

Vulnerability Details

CVE-ID: CVE-2025-60570

Affected Software: D-Link Multiple Products

Affected Versions: D-Link DIR-600L Ax firmware version 1.16WWb01. See vendor advisory for a complete list of affected products and versions.

Vulnerability: This vulnerability is a classic buffer overflow that exists in the formLogDnsquery function. An attacker can exploit this by sending a request containing an overly long string in the curTime parameter. The function does not properly validate the length of this input, causing it to write data beyond the boundaries of the allocated memory buffer, which can overwrite adjacent memory structures. A successful exploit could lead to arbitrary code execution with the privileges of the device's firmware, or it could cause a denial-of-service condition by crashing the device.

Business Impact

This vulnerability is rated as High severity with a CVSS score of 7.5. Exploitation could allow an unauthenticated attacker to execute arbitrary code on the affected D-Link device, leading to a complete system compromise. The potential business impact includes the interception of sensitive network traffic, unauthorized access to the internal network, and the use of the compromised device as a pivot point for further attacks or as part of a botnet. This poses a significant risk to data confidentiality, network integrity, and business continuity.

Remediation Plan

Immediate Action: Apply the security updates released by D-Link to all affected devices without delay. After patching, it is critical to monitor for any signs of exploitation attempts and thoroughly review system and access logs for suspicious activity that may have occurred prior to the patch application.

Proactive Monitoring: Security teams should monitor for unusual traffic patterns or malformed requests directed at the device's web management interface, specifically targeting the formLogDnsquery function or containing an abnormally long curTime parameter. Implement IDS/IPS signatures designed to detect buffer overflow attempts. Review device logs for unexpected reboots, crashes, or error messages which could indicate failed exploitation attempts.

Compensating Controls: If immediate patching is not feasible, restrict access to the device's management interface to a trusted internal network or specific administrative IP addresses. Disable remote (WAN) administration unless it is absolutely essential. Consider placing the device behind a Web Application Firewall (WAF) or an Intrusion Prevention System (IPS) that can inspect and block malicious requests targeting this vulnerability.

Exploitation Status

Public Exploit Available: False

Analyst Notes: As of the publication date, October 24, 2025, there are no known public exploits or active exploitation campaigns targeting this vulnerability. However, vulnerabilities in widely deployed SOHO/SME router products like those from D-Link are frequently targeted by threat actors. It is highly probable that a proof-of-concept exploit will be developed and released publicly in the near future.

Analyst Recommendation

Given the high severity (CVSS 7.5) of this vulnerability and the potential for a complete device compromise, organizations must prioritize the immediate patching of all affected D-Link devices. While this CVE is not currently listed on the CISA KEV catalog, its nature as a buffer overflow makes it an attractive and reliable target for attackers. Organizations should treat this as a critical priority and implement the recommended remediation and monitoring actions to prevent a potential network breach.

Executive Summary:
A high-severity buffer overflow vulnerability has been identified in multiple D-Link products, including the DIR-600L router. This flaw can be exploited by an unauthenticated remote attacker sending a specially crafted request to the device's web interface, potentially leading to arbitrary code execution. Successful exploitation could allow an attacker to gain complete control over the affected network device, compromising the security of the entire network it protects.

Vulnerability Details

CVE-ID: CVE-2025-60568

Affected Software: D-Link Multiple Products

Affected Versions: The vulnerability is confirmed in D-Link DIR-600L Ax firmware version 1.16WWb01. See vendor advisory for a complete list of all affected products and versions.

Vulnerability: This vulnerability is a classic buffer overflow that exists in the formAdvFirewall function of the device's web management interface. An attacker can exploit this by sending a malicious HTTP request containing an overly long string in the curTime parameter. The function does not properly validate the length of this input, causing it to write past the intended buffer on the stack, which can overwrite critical control data, such as the function's return address. This allows an attacker to redirect the program's execution flow to malicious shellcode, resulting in arbitrary code execution with the privileges of the web server process, which is typically root on embedded devices.

Business Impact

This vulnerability is rated as High severity with a CVSS score of 7.5, posing a significant risk to the organization. A successful exploit would grant an attacker complete control over the network gateway, enabling them to intercept, monitor, or manipulate all network traffic. Potential consequences include the theft of sensitive data, deployment of malware on the internal network, disruption of business operations by causing a denial of service, and using the compromised device as a platform to launch further attacks against other targets. The compromise of a perimeter device can lead to a full network breach, significant financial loss, and reputational damage.

Remediation Plan

Immediate Action: Immediately identify all affected D-Link devices within the environment and apply the security updates provided by the vendor. Firmware updates should be downloaded from the official D-Link support website and installed according to the vendor's instructions. After patching, monitor system logs for any signs of compromise or further exploitation attempts.

Proactive Monitoring: System administrators should actively monitor for signs of exploitation. Review web server access logs on the D-Link devices for unusually long requests to pages related to the advanced firewall configuration, specifically targeting the curTime parameter. Configure network intrusion detection systems (IDS) to alert on signatures associated with this CVE or generic buffer overflow attempts against the device's management interface. Monitor for unexpected device reboots, high CPU utilization, or unauthorized outbound connections originating from the router itself.

Compensating Controls: If immediate patching is not feasible, implement the following compensating controls to reduce risk:

• Disable remote (WAN) access to the device's web administration interface.
• Restrict access to the management interface to a dedicated and trusted management network or specific IP addresses.
• Place the device behind a Web Application Firewall (WAF) or an IDS/IPS capable of detecting and blocking buffer overflow attack patterns.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of October 24, 2025, there is no known public proof-of-concept exploit code for this vulnerability, and it is not known to be actively exploited in the wild. However, vulnerabilities in widely deployed SOHO/SME networking equipment are high-value targets for threat actors. It is highly likely that exploit code will be developed and integrated into automated attack tools in the near future.

Analyst Recommendation

Given the high severity of this vulnerability (CVSS 7.5) and its potential for complete device compromise, we strongly recommend that organizations prioritize the immediate patching of all affected D-Link products. The risk of an unauthenticated attacker gaining a foothold on the network perimeter is unacceptable. Although this vulnerability is not currently listed on the CISA KEV catalog, its status could change rapidly once exploitation is observed in the wild. If patching cannot be performed immediately, the compensating controls listed above must be implemented without delay to mitigate the immediate threat.

Executive Summary:
A critical buffer overflow vulnerability, identified as CVE-2025-60554, has been discovered in multiple products, including the D-Link DIR-600L router. This flaw allows an unauthenticated remote attacker to execute arbitrary code on an affected device by sending a specially crafted request, potentially leading to a complete system compromise. Given the critical severity rating (CVSS 9.8), this vulnerability poses a significant risk of data theft, network disruption, and further intrusions into the corporate network.

Vulnerability Details

CVE-ID: CVE-2025-60554

Affected Software: Unknown Multiple Products

Affected Versions: The vulnerability is confirmed in D-Link DIR-600L Ax firmware version FW116WWb01. See vendor advisory for specific affected versions of other products.

Vulnerability: This vulnerability is a classic stack-based buffer overflow. It exists within the formSetEnableWizard function, which processes user-supplied input via the curTime parameter. An unauthenticated attacker can exploit this by sending a malicious HTTP request containing an overly long string in the curTime parameter. The function fails to perform proper bounds checking, allowing the attacker's input to overwrite adjacent memory on the stack, including the saved instruction pointer. By carefully crafting the payload, an attacker can redirect the program's execution flow to malicious shellcode, resulting in arbitrary code execution with the privileges of the web server process, which is often root on embedded devices.

Business Impact

This vulnerability is rated as critical severity with a CVSS score of 9.8, reflecting the high potential for damage. Successful exploitation allows an attacker to gain complete control over the affected network device. This could lead to severe consequences, including the interception and theft of sensitive network traffic (e.g., credentials, financial data), using the compromised device as a pivot point to launch attacks against the internal network, or enlisting the device into a botnet for use in Distributed Denial-of-Service (DDoS) attacks. The high impact on confidentiality, integrity, and availability makes this a top-priority risk for any organization using the affected products.

Remediation Plan

Immediate Action: Organizations must immediately identify all affected devices and apply the latest firmware or software updates provided by the vendor. Due to the critical nature of this vulnerability, patching should be treated as an emergency change. After patching, monitor systems for any signs of compromise that may have occurred prior to remediation.

Proactive Monitoring: Implement enhanced monitoring on network security devices. Configure Intrusion Detection Systems (IDS) and Web Application Firewalls (WAF) to detect and block requests containing unusually long values for the curTime parameter, especially those targeting the device's web administration interface. Monitor firewall and device logs for anomalous outbound connections from affected devices, which could indicate a successful compromise.

Compensating Controls: If immediate patching is not feasible, implement the following controls to mitigate risk:

• Restrict access to the device's management interface to a secure, isolated management network.
• Disable remote (WAN) administration on all affected devices.
• Deploy a Web Application Firewall (WAF) with rules specifically designed to block oversized requests to the vulnerable parameter (virtual patching).

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of October 24, 2025, there are no known public exploits or active exploitation campaigns targeting this vulnerability. However, given the nature of buffer overflow vulnerabilities and the high CVSS score, it is highly probable that threat actors will develop a functional exploit in the near future.

Analyst Recommendation

This vulnerability represents a critical risk to the organization. The CVSS score of 9.8 indicates that it is easily exploitable by a remote, unauthenticated attacker and can result in a full system compromise. Although this CVE is not currently listed on the CISA KEV list, its severity makes it a prime candidate for future inclusion. We strongly recommend that organizations prioritize the immediate patching of all affected "Unknown Multiple Products" to prevent potential exploitation. If patching is delayed, compensating controls must be implemented without exception.

Executive Summary:
A critical buffer overflow vulnerability has been discovered in specific D-Link router firmware, identified as CVE-2025-60553. This flaw allows a remote, unauthenticated attacker to execute arbitrary code by sending a specially crafted request, potentially leading to a complete takeover of the affected device and compromise of the network it protects.

Vulnerability Details

CVE-ID: CVE-2025-60553

Affected Software: D-Link DIR-600L (and potentially other products)

Affected Versions: Firmware version FW116WWb01. See vendor advisory for a complete list of affected products and versions.

Vulnerability: The vulnerability is a stack-based buffer overflow within the formSetWAN_Wizard52 function, which is part of the router's web management interface. An unauthenticated attacker can exploit this by sending a specially crafted HTTP request containing an overly long string in the curTime parameter. This oversized input overwrites the buffer, allowing the attacker to control the instruction pointer and achieve remote code execution (RCE) on the device, typically with root-level privileges.

Business Impact

This vulnerability is rated as critical severity with a CVSS score of 9.8. Successful exploitation would grant an attacker complete control over the network device. This could lead to severe business consequences, including unauthorized access to the internal network, eavesdropping on sensitive traffic, data exfiltration, and using the compromised device as a pivot point for further attacks. The compromised router could also be used in botnets for launching Distributed Denial-of-Service (DDoS) attacks, causing significant operational disruption and reputational damage.

Remediation Plan

Immediate Action: Immediately identify all affected devices within the environment and update them to the latest firmware version released by the vendor to patch this vulnerability. Prioritize patching for internet-facing or mission-critical devices. After patching, monitor for any signs of exploitation attempts by reviewing device and network access logs.

Proactive Monitoring:

• Log Analysis: Scrutinize web server access logs on affected devices for requests to the formSetWAN_Wizard52 function containing unusually long or malformed values for the curTime parameter.
• Network Traffic: Monitor for anomalous outbound traffic originating from the router's management interface, which could indicate a successful compromise and communication with a command-and-control server.
• System Behavior: Monitor devices for unexpected reboots, crashes, or unauthorized configuration changes, which could be indicators of an exploitation attempt.

Compensating Controls: If patching cannot be immediately deployed, implement the following controls to reduce risk:

• Disable remote/WAN management of the device's web administration interface.
• If remote administration is essential, restrict access to the interface using a firewall with strict Access Control Lists (ACLs) limited to trusted IP addresses only.
• Place the management interface behind a VPN to ensure all administrative access is authenticated and encrypted.
• Deploy an Intrusion Prevention System (IPS) with signatures capable of detecting and blocking buffer overflow attack patterns.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of October 24, 2025, there are no known public proof-of-concept exploits or active exploitation campaigns targeting this vulnerability. However, given the critical CVSS score and the straightforward nature of the vulnerability, it is highly likely that threat actors will develop exploits in the near future. This vulnerability is not currently listed on CISA's Known Exploited Vulnerabilities (KEV) catalog.

Analyst Recommendation
Due to the critical severity (CVSS 9.8) of this vulnerability, immediate action is required. We strongly recommend that organizations prioritize the identification and patching of all affected devices without delay. While there is no current evidence of active exploitation, the high potential for remote code execution makes this an attractive target for attackers. In addition to patching, organizations should immediately apply compensating controls, such as restricting access to the management interface, to provide a layered defense and mitigate risk until updates can be fully deployed.

Executive Summary:
A critical remote code execution vulnerability has been discovered in specific D-Link router firmware. This flaw, a buffer overflow, allows an unauthenticated attacker to send a malicious request to the device and gain complete control, posing a significant risk to network security, data confidentiality, and the integrity of internal systems.

Vulnerability Details

CVE-ID: CVE-2025-60548

Affected Software: D-Link DIR-600L and potentially other products.

Affected Versions: Firmware version FW116WWb01 for the D-Link DIR-600L is confirmed to be vulnerable. See vendor advisory for a complete list of all affected products and versions.

Vulnerability: This vulnerability is a classic buffer overflow that exists in the formLanSetupRouterSettings function of the device's web administration interface. An unauthenticated, remote attacker can exploit this flaw by sending a specially crafted HTTP request containing an excessively long string in the curTime parameter. The function fails to properly validate the length of this input, causing a buffer overflow that can overwrite adjacent memory on the stack, ultimately allowing the attacker to execute arbitrary code with the privileges of the device's operating system (typically root).

Business Impact

This vulnerability is rated as critical with a CVSS score of 9.8, reflecting the ease of exploitation and the severe potential impact. Successful exploitation would grant an attacker complete control over the affected network device. This could lead to severe business consequences, including the interception and theft of sensitive data passing through the network, redirection of users to malicious websites, and using the compromised router as a pivot point to launch further attacks against the internal corporate network. The device could also be absorbed into a botnet, consuming network bandwidth and potentially implicating the organization in larger-scale cyberattacks like Distributed Denial-of-Service (DDoS).

Remediation Plan

Immediate Action: Administrators should immediately identify all affected devices within the environment and apply the latest firmware updates provided by the vendor to mitigate this vulnerability. After patching, monitor system logs for any signs of compromise that may have occurred prior to remediation.

Proactive Monitoring:

• Log Analysis: Review web server and system logs on network devices for anomalous requests targeting the LAN setup functionality, specifically looking for abnormally long values associated with the curTime parameter.
• Network Traffic Analysis: Monitor for unusual outbound connections from network devices to unknown or suspicious IP addresses, which could indicate a successful compromise and command-and-control (C2) communication.
• System Behavior: Watch for unexpected device reboots, configuration changes, or performance degradation, which could be indicators of exploitation.

Compensating Controls: If immediate patching is not feasible, implement the following controls to reduce the risk of exploitation:

• Restrict access to the device's web administration interface to a trusted, segmented management network.
• Disable remote/WAN management access entirely to limit the attack surface to the local network.
• Deploy an Intrusion Prevention System (IPS) with signatures capable of detecting and blocking buffer overflow attack patterns.

Exploitation Status

Public Exploit Available: False (as of Oct 24, 2025)

Analyst Notes: As of the publication date, October 24, 2025, there are no known public exploits or active exploitation campaigns targeting this vulnerability. However, due to the critical severity (CVSS 9.8) and the straightforward nature of the flaw, it is highly probable that a functional exploit will be developed and released by security researchers or threat actors in the near future.

Analyst Recommendation
Given the critical severity of this vulnerability, immediate action is required. We strongly recommend that all affected D-Link routers and any other products listed in the vendor advisory be patched without delay. Although this CVE is not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog, its high impact score signifies a significant risk of unauthenticated remote code execution. Prioritizing the remediation of this vulnerability is essential to prevent a complete compromise of the network perimeter.

Executive Summary:
A critical vulnerability has been discovered in certain D-Link router firmware, allowing an unauthenticated attacker to execute arbitrary commands and gain complete control of the device. Successful exploitation could lead to total network compromise, data theft, and service disruption. Due to the ease of exploitation and critical severity, immediate action is required to mitigate this threat.

Vulnerability Details

CVE-ID: CVE-2025-55583

Affected Software: D-Link DIR-868L B1 Router (and potentially other products)

Affected Versions: Firmware version FW2.05WWB02. See vendor advisory for a complete list of affected products and versions.

Vulnerability: This is an unauthenticated operating system (OS) command injection vulnerability. The flaw exists within the fileaccess.cgi component, specifically at the /dws/api/UploadFile endpoint. An attacker on the same network can send a specially crafted request to this endpoint without needing any credentials, embedding malicious OS commands within a request parameter. The router's underlying operating system fails to properly sanitize this input and executes the commands with system-level privileges, granting the attacker full administrative control over the device.

Business Impact

This vulnerability is rated as critical severity with a CVSS score of 9.8. A successful exploit would have a severe impact on business operations, confidentiality, and integrity. An attacker could gain complete control of the network gateway, allowing them to intercept, monitor, or redirect all internet traffic, steal sensitive credentials and data, pivot to attack other internal network devices, or use the compromised router as part of a botnet for larger attacks. The risk extends beyond data loss to include significant reputational damage and potential regulatory penalties.

Remediation Plan

Immediate Action: Immediately identify all affected D-Link devices and update them to the latest patched firmware version provided by the vendor. After patching, monitor device logs for any signs of compromise that may have occurred prior to the update, specifically reviewing access logs for unusual requests to fileaccess.cgi.

Proactive Monitoring:

• Review web server logs on the router for any requests to the /dws/api/UploadFile or fileaccess.cgi endpoints, paying close attention to requests originating from untrusted IP addresses or containing unusual patterns.
• Monitor network traffic for unexpected outbound connections originating from the router itself, which could indicate a compromise.
• Implement network intrusion detection/prevention systems (IDS/IPS) with signatures capable of detecting exploitation attempts against this CVE.

Compensating Controls:
If immediate patching is not feasible, implement the following controls:

• Disable remote (WAN) management of the router's web interface.
• Restrict access to the router's management interface to a dedicated and trusted administrative network segment.
• Use a web application firewall (WAF) or an upstream firewall to create a rule that blocks all access to the vulnerable /dws/api/UploadFile endpoint.

Exploitation Status

Public Exploit Available: False

Analyst Notes: As of the publication date of this vulnerability (Aug 28, 2025), there are no known public proof-of-concept exploits or active exploitation campaigns in the wild. However, given the critical severity and the fact that it is an unauthenticated vulnerability, it is highly probable that threat actors will develop exploits in the near future.

Analyst Recommendation

This vulnerability poses a critical and immediate threat to the security of any network using the affected devices. Given the CVSS score of 9.8, organizations must treat the remediation of this vulnerability as their highest priority. Although this CVE is not yet on the CISA KEV list, its characteristics make it an attractive target for widespread exploitation. We strongly recommend applying the vendor-supplied patches immediately and implementing the suggested monitoring controls to detect and prevent any potential compromise.

Executive Summary:
A critical remote code execution vulnerability, identified as CVE-2025-15194, affects end-of-life D-Link DIR-600 routers. An unauthenticated remote attacker can exploit this flaw by sending a malicious web request to take complete control of the device, potentially leading to network compromise, data theft, and further internal attacks. Since the product is no longer supported, no patch is available, making immediate device replacement the only effective remediation.

Vulnerability Details

CVE-ID: CVE-2025-15194

Affected Software: D-Link DIR-600

Affected Versions: All firmware versions up to and including 2.15WWb02

Vulnerability: This vulnerability is a stack-based buffer overflow within the HTTP Header Handler component of the device's web server. A remote, unauthenticated attacker can trigger the overflow by sending a specially crafted HTTP request to the hedwig.cgi file containing an overly long Cookie header. Successful exploitation overwrites critical data on the stack, allowing the attacker to execute arbitrary code with the privileges of the web server on the device, resulting in a full system compromise.

Business Impact

This vulnerability is rated as critical severity with a CVSS score of 9.8. Exploitation could lead to a complete compromise of the affected network device, allowing an attacker to gain a foothold in the network perimeter. Potential consequences include interception and redirection of network traffic, eavesdropping on sensitive communications, launching attacks against internal network assets, and incorporating the compromised device into a botnet for use in larger-scale attacks like DDoS. For an organization, this represents a significant risk of data breaches, operational disruption, and reputational damage.

Remediation Plan

Immediate Action: The affected product is end-of-life and no longer supported by the vendor; therefore, no security patch will be released. The primary remediation is to immediately decommission and replace all vulnerable D-Link DIR-600 devices with a currently supported product. Until replacement is possible, restrict all access to the device's web management interface from the internet (WAN).

Proactive Monitoring: Monitor network traffic for anomalous requests targeting the hedwig.cgi file, particularly those with unusually large or malformed Cookie headers. Network intrusion detection systems (IDS) should be configured with signatures to detect known exploit attempts. Review firewall and web server logs for connections to the device's management interface from untrusted or external IP addresses.

Compensating Controls: If the device cannot be immediately replaced, implement the following controls:

• Ensure the device's management interface is not exposed to the internet.
• Implement strict firewall rules to limit all inbound and outbound traffic to and from the device to only what is absolutely necessary for its function.
• Place the device in a segmented network zone to limit an attacker's ability to move laterally into the corporate network if the device is compromised.

Exploitation Status

Public Exploit Available: true

Analyst Notes: As of the publication date of Dec 29, 2025, a functional exploit for this vulnerability has been publicly disclosed. Given that the vulnerability affects unsupported, end-of-life hardware, these devices are prime targets for automated scanning and exploitation by threat actors for botnet recruitment and initial access to networks.

Analyst Recommendation

Due to the critical severity (CVSS 9.8), the availability of a public exploit, and the lack of a vendor patch, this vulnerability poses an immediate and unacceptable risk. We strongly recommend that all D-Link DIR-600 routers be identified and removed from the environment as a top priority. While this CVE is not currently on the CISA KEV list, its characteristics make it a likely candidate for widespread exploitation, and organizations should treat its remediation with the utmost urgency.

Executive Summary:
A high-severity vulnerability has been identified in multiple D-Link products, including the DWR-M920 router. This flaw could allow a remote, unauthenticated attacker to take complete control of an affected device, potentially leading to network traffic interception, service disruption, or unauthorized access to the internal network. Organizations are urged to apply vendor-supplied patches immediately to mitigate this significant security risk.

Vulnerability Details

CVE-ID: CVE-2025-15190

Affected Software: D-Link Multiple Products

Affected Versions: D-Link DWR-M920 firmware versions up to and including 1.00. See vendor advisory for a complete list of other affected products and versions.

Vulnerability: The vulnerability is a command injection flaw within the web management interface of the affected devices. An unauthenticated attacker can send a specially crafted HTTP request to a specific endpoint on the device's web server. The device fails to properly sanitize user-supplied input within this request, allowing the attacker to inject and execute arbitrary operating system commands with root-level privileges, resulting in a full compromise of the device.

Business Impact

This vulnerability is rated as High severity with a CVSS score of 8.8. Successful exploitation poses a significant risk to the organization. An attacker gaining root-level control of a network gateway device can intercept, modify, or redirect all network traffic, leading to data theft of sensitive information. The compromised device could also be used as a pivot point to launch further attacks against the internal network, or be enrolled in a botnet for use in larger-scale attacks like Distributed Denial of Service (DDoS). The potential consequences include data breaches, network outages, and reputational damage.

Remediation Plan

Immediate Action: Apply vendor-provided security updates immediately to all affected D-Link devices. After patching, it is crucial to monitor for any signs of post-compromise activity by reviewing system and access logs for unusual or unauthorized connections that may have occurred prior to remediation.

Proactive Monitoring: Implement enhanced monitoring on network segments with affected devices. Security teams should look for:

• Unusual outbound connections originating from the D-Link devices.
• Anomalous traffic patterns or spikes in bandwidth usage.
• Unauthorized configuration changes or unexpected device reboots in system logs.
• Inbound connection attempts to the device's management interface from untrusted IP addresses.

Compensating Controls: If patching cannot be immediately deployed, implement the following controls to reduce the risk of exploitation:

• Disable remote/WAN management access to the device's administrative interface.
• If remote access is required, restrict it to a trusted set of source IP addresses or place it behind a VPN.
• Implement network segmentation to limit the potential impact of a device compromise on other critical network assets.

Exploitation Status

Public Exploit Available: False (as of December 30, 2025)

Analyst Notes: As of the publication date, there is no known public proof-of-concept exploit code or active exploitation of this vulnerability in the wild. However, vulnerabilities in widely deployed networking equipment are prime targets for threat actors. It is highly probable that an exploit will be developed and released publicly, increasing the risk of widespread attacks.

Analyst Recommendation

Given the High severity (CVSS 8.8) of this vulnerability, immediate action is required to prevent potential compromise. The primary recommendation is to apply the security updates provided by D-Link to all affected devices without delay. Although this CVE is not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog, its characteristics make it a likely candidate for future inclusion. If immediate patching is not feasible, organizations must implement the recommended compensating controls, particularly restricting all external access to the device's management interface, to mitigate the immediate risk of exploitation.

Executive Summary:
A high-severity vulnerability has been discovered in multiple D-Link networking products, including the DWR-M920 router. This flaw allows a remote, unauthenticated attacker to take complete control of an affected device by sending a specially crafted network request. Due to the critical nature of this vulnerability and the ease of exploitation, immediate patching is required to prevent potential network compromise, data theft, and service disruption.

Vulnerability Details

CVE-ID: CVE-2025-15189

Affected Software: D-Link Multiple Products

Affected Versions: D-Link DWR-M920 firmware versions up to and including 1.x. See vendor advisory for a complete list of other affected products and versions.

Vulnerability: The vulnerability is an unauthenticated command injection flaw in the web management interface of the affected devices. A specific component of the interface fails to properly sanitize user-supplied input before passing it to the underlying operating system for execution. An attacker can exploit this by sending a specially crafted HTTP request to the vulnerable endpoint, embedding arbitrary OS commands which are then executed with the privileges of the root user. Exploitation requires no prior authentication and only needs network access to the device's management portal.

Business Impact

This vulnerability is rated as High severity with a CVSS score of 8.8. Successful exploitation grants an attacker complete administrative control over the affected networking device, leading to significant business risks. An attacker could intercept, modify, or reroute all network traffic (confidentiality and integrity), leading to data breaches or phishing attacks. The device could be rendered inoperable, causing a denial of service (availability). Furthermore, a compromised router can be used as a persistent foothold to launch further attacks against other systems on the internal network.

Remediation Plan

Immediate Action: Apply vendor-provided security updates immediately to all affected D-Link devices. Prioritize patching for devices that are internet-facing or manage critical network segments. After patching, monitor for any unusual activity and review access logs for signs of compromise that may have occurred prior to the update.

Proactive Monitoring: Organizations should actively monitor for signs of exploitation. Review web server access logs on the D-Link devices for unusual or malformed requests, particularly those targeting system diagnostic or configuration pages. Monitor network traffic for unexpected outbound connections from the devices to unknown IP addresses, which could indicate a command-and-control channel. Set up alerts for unexpected device reboots or configuration changes.

Compensating Controls: If immediate patching is not feasible, implement the following controls to reduce the risk of exploitation:

• Disable remote (WAN) access to the device's web management interface.
• Restrict access to the management interface to a dedicated and trusted management VLAN or specific trusted IP addresses.
• Deploy an Intrusion Prevention System (IPS) or Web Application Firewall (WAF) with rules to detect and block command injection attack patterns.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of December 30, 2025, there are no known public exploits or active exploitation campaigns targeting this vulnerability. However, vulnerabilities in networking equipment are frequently reverse-engineered by security researchers and threat actors. It is highly probable that a functional proof-of-concept exploit will become publicly available in the near future, increasing the likelihood of widespread attacks.

Analyst Recommendation

This vulnerability represents a significant risk to the network perimeter and internal infrastructure. Given the high CVSS score of 8.8, which reflects a critical flaw that can be exploited remotely without authentication, immediate action is paramount. While this CVE is not currently on the CISA Known Exploited Vulnerabilities (KEV) catalog, its characteristics make it a prime target for future inclusion should exploitation become widespread. We strongly recommend that all organizations identify affected D-Link devices in their environments and apply the vendor-supplied patches or mitigating controls on an emergency basis.

Executive Summary:
A high-severity vulnerability has been identified in multiple D-Link router models, allowing an unauthenticated remote attacker to execute arbitrary code. Successful exploitation could lead to a complete compromise of the affected device, enabling attackers to intercept network traffic, disrupt services, or gain a foothold into the internal network. Organizations are urged to apply the vendor-provided security patches immediately to mitigate this critical risk.

Vulnerability Details

CVE-ID: CVE-2025-14659

Affected Software: D-Link Multiple Products

Affected Versions: DIR-860LB1 firmware version 203b01/203b03, DIR-868LB1 firmware version 203b01/203b03

Vulnerability: The vulnerability is an unauthenticated command injection flaw within the web management interface of the affected D-Link routers. An attacker can send a specially crafted HTTP request to a specific API endpoint on the device. Due to insufficient input sanitization, malicious commands can be embedded within a request parameter, which are then executed on the underlying operating system with root privileges. Exploitation does not require any prior authentication or user interaction.

Business Impact

This vulnerability is rated as High severity with a CVSS score of 8.8. A successful exploit could have a significant business impact by allowing an attacker to take full control of the network device. Potential consequences include the theft of sensitive data passing through the router, disruption of internet connectivity and critical business operations, and using the compromised router as a pivot point to launch further attacks against the internal corporate network. The reputational damage and financial loss resulting from a data breach or service outage could be substantial.

Remediation Plan

Immediate Action: Apply the vendor-provided security updates to all affected D-Link devices immediately. After patching, monitor device logs and network traffic for any signs of compromise or further exploitation attempts. Review historical access logs for any suspicious activity preceding the patch deployment.

Proactive Monitoring: Implement enhanced monitoring for affected devices. Scrutinize web server logs for unusual or malformed HTTP requests, particularly those targeting administrative API endpoints. Monitor for unexpected outbound network connections from the routers, abnormal CPU or memory usage, and the presence of unauthorized processes or files on the device.

Compensating Controls: If immediate patching is not feasible, implement the following controls to reduce the risk of exploitation:

• Restrict access to the device's web management interface to a dedicated, trusted administrative network segment.
• Ensure the management interface is not exposed to the public internet.
• If available, deploy a Web Application Firewall (WAF) with rules to inspect and block malicious requests targeting the vulnerable parameters.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of December 15, 2025, there are no known public proof-of-concept exploits or active attacks targeting this vulnerability. However, due to the high severity and relative simplicity of command injection flaws, the development of exploit code by security researchers and threat actors is highly probable in the near future.

Analyst Recommendation

Given the high CVSS score of 8.8, this vulnerability presents a critical risk to the organization. Although it is not currently listed on the CISA KEV catalog and no active exploitation has been observed, its unauthenticated and remote nature makes it an attractive target for attackers. We strongly recommend that organizations prioritize the immediate deployment of vendor security patches across all affected assets. If patching is delayed, compensating controls must be implemented without exception to limit the attack surface.

Executive Summary:
A critical vulnerability has been identified in multiple D-Link products, allowing an unauthenticated remote attacker to execute arbitrary code on affected devices. Successful exploitation could grant an attacker complete control over the network router, enabling them to intercept traffic, access the internal network, or launch further attacks. This represents a significant risk to network security and data confidentiality.

Vulnerability Details

CVE-ID: CVE-2025-13553

Affected Software: D-Link Multiple Products

Affected Versions: See vendor advisory for specific affected versions. The D-Link DWR-M920 is confirmed to be affected.

Vulnerability: This vulnerability is an unauthenticated command injection flaw in the web-based management interface of the affected devices. An attacker can send a specially crafted HTTP request to a specific administrative endpoint without needing valid credentials. This request can include malicious shell commands that are then executed by the underlying operating system with the highest level of privileges, effectively giving the attacker full control over the device.

Business Impact

This vulnerability is rated as High severity with a CVSS score of 8.8. A compromised network gateway device poses a direct and severe threat to the organization. An attacker could leverage this access to monitor, redirect, or block all incoming and outgoing internet traffic, leading to data theft, espionage, and significant business disruption. Furthermore, the compromised router can serve as a pivot point for attackers to gain access to the internal corporate network, bypass perimeter defenses, and compromise sensitive internal systems, posing a critical risk to data confidentiality, integrity, and availability.

Remediation Plan

Immediate Action: Identify all affected D-Link devices on the network and apply the vendor-provided security updates immediately. Prioritize patching for devices that are internet-facing or manage critical network segments. After patching, monitor for any signs of exploitation attempts and review historical access logs for indicators of compromise.

Proactive Monitoring:

• Network Traffic: Monitor for unusual outbound connections from the router's management interface to unknown IP addresses.
• Logs: Review device logs for unauthorized administrative access, unexpected system reboots, or error messages related to shell command execution.
• System Behavior: Use network monitoring tools to detect anomalies such as unexpected configuration changes or high CPU/memory utilization on the affected devices.

Compensating Controls:
If immediate patching is not feasible:

• Disable remote (WAN) access to the device's management interface.
• If remote access is required for business operations, restrict access to a limited set of trusted IP addresses using strict firewall rules.
• Ensure the device is behind a firewall or Web Application Firewall (WAF) that can inspect and block malicious web requests.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of November 23, 2025, there is no known public exploit code available. However, given the nature of command injection vulnerabilities, it is highly probable that threat actors will develop exploits in the near future. Network edge devices like routers are high-value targets for attackers seeking to establish a persistent foothold in a network.

Analyst Recommendation

This vulnerability represents a critical risk and must be addressed with the highest priority. Due to the high CVSS score of 8.8 and the strategic importance of the affected network devices, immediate action is required. Although this CVE is not currently listed on the CISA KEV list, its severity warrants treating it as an actively targeted vulnerability. We strongly recommend that the organization follows the remediation plan immediately to prevent a potential network compromise.

Executive Summary:
A high-severity vulnerability has been identified in certain D-Link router models, carrying a CVSS score of 8.8. This flaw could allow an unauthenticated remote attacker to execute arbitrary code and gain complete control over an affected device. Successful exploitation could lead to network traffic interception, data theft, or the compromise of the entire network connected to the device.

Vulnerability Details

CVE-ID: CVE-2025-13552

Affected Software: D-Link Multiple Products

Affected Versions: D-Link DIR-822K, DWR-M920. See vendor advisory for specific affected firmware versions.

Vulnerability: This vulnerability is an unauthenticated remote code execution (RCE) flaw in the web management interface of the affected devices. An attacker can exploit this by sending a specially crafted HTTP request to the device's web server. The flaw exists due to improper input validation in a specific service, allowing an attacker to inject and execute arbitrary system commands with root-level privileges without needing any prior authentication.

Business Impact

This vulnerability is rated as High severity with a CVSS score of 8.8. A successful exploit would grant an attacker complete administrative control over the affected network hardware. This could lead to severe business consequences, including the interception of sensitive internal and external network traffic, redirection of users to malicious websites for phishing attacks, and using the compromised device as a pivot point to attack other systems on the internal network. Furthermore, the compromised router could be enlisted into a botnet to conduct Distributed Denial-of-Service (DDoS) attacks, potentially causing reputational damage and service disruption.

Remediation Plan

Immediate Action: Identify all affected D-Link devices within the environment and apply the security updates provided by the vendor immediately. After patching, it is crucial to monitor for any signs of compromise that may have occurred prior to remediation by reviewing system and access logs for unauthorized activity.

Proactive Monitoring: Implement enhanced monitoring of network traffic to and from the affected devices. Specifically, look for unusual inbound connection attempts to the web management interface, unexpected device reboots, unauthorized configuration changes, or suspicious outbound traffic originating from the routers. Network Intrusion Detection Systems (NIDS) should be updated with signatures for this vulnerability if available.

Compensating Controls: If immediate patching is not feasible, implement the following controls as a temporary measure:

• Disable remote (WAN) management of the device's web interface.
• Restrict access to the management interface to a dedicated and trusted administrative network or VLAN.
• Ensure a strong, unique administrative password is in use to limit the impact of other potential attack vectors.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of November 23, 2025, there is no known public proof-of-concept exploit code, and there are no confirmed reports of this vulnerability being actively exploited in the wild. However, given the high severity score and the prevalence of these devices, it is highly probable that threat actors will develop and deploy exploits in the near future.

Analyst Recommendation

Given the high severity (CVSS 8.8) of this unauthenticated remote code execution vulnerability, we strongly recommend that organizations prioritize the immediate patching of all affected D-Link devices. Although this CVE is not currently on the CISA KEV list, its critical nature makes it an attractive target for attackers. The risk of complete network compromise necessitates urgent action. If patching cannot be performed immediately, the compensating controls listed above must be implemented without delay to reduce the attack surface.

Executive Summary:
A high-severity vulnerability has been discovered in certain D-Link router models, which could allow an unauthenticated remote attacker to take complete control of affected devices. Successful exploitation poses a significant risk to network security, potentially leading to data interception, unauthorized access to the internal network, and service disruption. Organizations are urged to apply vendor-supplied security patches immediately to mitigate this threat.

Vulnerability Details

CVE-ID: CVE-2025-13551

Affected Software: D-Link Multiple Products

Affected Versions: The vulnerability is confirmed in D-Link DIR-822K and DWR-M920. See vendor advisory for specific affected firmware versions.

Vulnerability: This vulnerability is an unauthenticated command injection flaw in the web management interface of the affected devices. An attacker can exploit this by sending a specially crafted HTTP request to the device, which contains malicious commands embedded within a legitimate parameter. The device's firmware fails to properly sanitize this input, allowing the injected commands to be executed on the underlying operating system with root-level privileges, giving the attacker full control over the router.

Business Impact

This vulnerability is rated as High severity with a CVSS score of 8.8. A successful exploit could have a severe impact on business operations. An attacker gaining control of a network gateway device can intercept sensitive data, pivot to attack other systems on the internal network, disrupt internet connectivity, or incorporate the device into a botnet for use in larger attacks like Distributed Denial of Service (DDoS). This can result in data breaches, financial loss, operational downtime, and significant reputational damage.

Remediation Plan

Immediate Action: Identify all vulnerable D-Link DIR-822K and DWR-M920 devices on the network and apply the security updates provided by the vendor immediately. This is the most effective method to permanently resolve the vulnerability.

Proactive Monitoring: Review device and network logs for any signs of compromise. Look for unusual access attempts to the web management interface, unexpected outbound connections from the routers, or unexplained configuration changes. Monitor network traffic for patterns consistent with command-and-control (C2) communication or scanning activity originating from the devices.

Compensating Controls: If immediate patching is not feasible, implement the following controls to reduce the risk of exploitation:

• Disable remote (WAN) access to the device's web management interface.
• If remote administration is necessary, restrict access to trusted IP addresses or require access through a secure VPN.
• Use network segmentation to isolate vulnerable devices from critical business assets.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of November 23, 2025, there are no known public exploits or active, in-the-wild exploitation campaigns targeting this vulnerability. However, given the high severity and the nature of the flaw (unauthenticated remote code execution), it is highly probable that threat actors will develop an exploit in the near future.

Analyst Recommendation

Given the high CVSS score of 8.8, immediate patching is the most critical action to prevent compromise. We strongly recommend that organizations prioritize the identification and patching of all affected D-Link devices. While this vulnerability is not currently listed on the CISA KEV catalog, its high severity makes it a likely candidate for future inclusion and a valuable target for attackers. Proactive application of vendor patches and implementation of compensating controls are essential to protect the network boundary from a potential breach.

Executive Summary:
A high-severity vulnerability has been identified in multiple D-Link router models, allowing a remote, unauthenticated attacker to potentially execute arbitrary code and take full control of an affected device. Successful exploitation could lead to a complete compromise of network security, enabling attackers to intercept sensitive data, pivot to internal networks, or disrupt connectivity. Organizations are urged to apply vendor-supplied security patches immediately to mitigate this critical risk.

Vulnerability Details

CVE-ID: CVE-2025-13550

Affected Software: D-Link Multiple Products

Affected Versions: D-Link DIR-822K, DWR-M920. See vendor advisory for specific affected firmware versions.

Vulnerability: This vulnerability is a remote code execution (RCE) flaw in the web management interface of the affected D-Link routers. The flaw exists due to insufficient input validation when processing certain unauthenticated HTTP requests. An unauthenticated attacker on the same network segment (or on the internet, if remote management is enabled) can send a specially crafted packet to the device's web server, triggering a buffer overflow and allowing for the execution of arbitrary code with root privileges.

Business Impact

This vulnerability is rated as High severity with a CVSS score of 8.8. A successful exploit would grant an attacker complete control over the network router, which acts as a critical gateway. The potential consequences include interception and theft of all unencrypted network traffic, redirection of users to malicious websites (DNS hijacking), gaining an initial foothold for lateral movement into the corporate network, and using the compromised device as part of a larger botnet for launching DDoS attacks. This poses a significant risk of data breaches, financial loss, operational disruption, and reputational damage.

Remediation Plan

Immediate Action:

• Identify all vulnerable D-Link devices on the network.
• Apply the security updates and firmware patches provided by D-Link immediately.
• After patching, monitor devices for any signs of compromise that may have occurred prior to the update.
• Review device access logs for any unusual or unauthorized connection attempts, particularly against the web management interface.

Proactive Monitoring:

• Implement network intrusion detection/prevention system (IDS/IPS) rules to detect and block traffic matching known exploit patterns for this CVE.
• Monitor network traffic for anomalous outbound connections originating from the routers, which could indicate command-and-control (C2) communication.
• Monitor for unexpected configuration changes or device reboots, which could be indicators of compromise.

Compensating Controls:

• If patching is not immediately possible, disable remote/WAN access to the device's management interface.
• Restrict access to the management interface to a dedicated, trusted administrative VLAN or specific IP addresses.
• Ensure the device is behind a firewall that can filter malicious traffic before it reaches the vulnerable web interface.

Exploitation Status

Public Exploit Available: false

Analyst Notes:
As of November 23, 2025, there are no known public proof-of-concept exploits or active exploitation campaigns targeting this vulnerability. However, vulnerabilities in widely deployed networking equipment are frequently and rapidly weaponized by threat actors for use in botnets and targeted attacks. The lack of current public exploitation should not diminish the urgency of remediation.

Analyst Recommendation

Given the high CVSS score of 8.8 and the critical role these devices play in network security, this vulnerability represents a significant threat. Although it is not currently listed on the CISA KEV catalog, its severity makes it a prime candidate for future inclusion. We strongly recommend that organizations prioritize the immediate patching of all affected D-Link devices. If patching must be delayed, the compensating controls outlined above, particularly disabling and restricting access to the management interface, must be implemented without delay to reduce the attack surface.

Executive Summary:
A high-severity vulnerability has been discovered in multiple D-Link products, including the DIR-822K router. This flaw allows a remote attacker to potentially take full control of affected devices without authentication. Successful exploitation could lead to network traffic interception, unauthorized access to the internal network, and deployment of malware.

Vulnerability Details

CVE-ID: CVE-2025-13549

Affected Software: D-Link Multiple Products

Affected Versions: See vendor advisory for a complete list of affected products and versions, including specific firmware for the D-Link DIR-822K.

Vulnerability: The vulnerability, rated with a CVSS score of 8.8, likely stems from a flaw such as command injection or a buffer overflow within the device's web management interface. An unauthenticated attacker on the same network (or remotely, if the management interface is exposed to the internet) can send a specially crafted request to the device. This allows the attacker to execute arbitrary code with the highest privileges, effectively gaining complete control over the networking device.

Business Impact

This vulnerability is classified as High severity with a CVSS score of 8.8. Exploitation could have a significant business impact by compromising the network perimeter. An attacker could intercept sensitive data passing through the router, pivot to attack other systems on the internal network, disrupt internet connectivity, or use the compromised device in a larger botnet for malicious activities. This poses a direct risk to data confidentiality, operational continuity, and the overall security posture of the organization.

Remediation Plan

Immediate Action: The primary remediation is to apply the security updates provided by D-Link immediately across all affected devices. After patching, review device administration and access logs for any signs of compromise that may have occurred prior to the update.

Proactive Monitoring: Monitor network traffic for unusual outbound connections originating from the D-Link devices. System administrators should also monitor for unauthorized configuration changes, unexpected device reboots, and suspicious login attempts in the management interface logs.

Compensating Controls: If immediate patching is not feasible, implement the following controls to reduce the risk of exploitation:

• Disable remote (WAN) administration of the device.
• Restrict access to the device's management interface to a dedicated and trusted management network or specific IP addresses.
• Ensure the device is behind a firewall that can filter potentially malicious traffic.

Exploitation Status

Public Exploit Available: False

Analyst Notes: As of November 23, 2025, there are no known public exploits or active exploitation campaigns targeting this vulnerability. However, due to the high severity and the widespread deployment of D-Link products, security researchers and threat actors are likely to develop proof-of-concept exploits in the near future.

Analyst Recommendation

Given the high CVSS score of 8.8, this vulnerability presents a critical risk and requires immediate attention. Organizations must prioritize the deployment of the vendor-supplied patches, focusing first on devices with management interfaces exposed to the internet. Although CVE-2025-13549 is not currently on the CISA KEV list, its severity makes it a likely candidate for future inclusion. We strongly recommend applying patches or compensating controls within the next 72 hours to prevent potential compromise.

Executive Summary:
A high-severity vulnerability has been discovered in certain D-Link network devices, which could allow a remote, unauthenticated attacker to take complete control of an affected router. Successful exploitation could lead to network traffic interception, deployment of malware on the internal network, or service disruption. Organizations are urged to apply vendor-supplied security updates immediately to mitigate this critical risk.

Vulnerability Details

CVE-ID: CVE-2025-13548

Affected Software: D-Link Multiple Products

Affected Versions: D-Link DIR-822K, DWR-M920. See vendor advisory for specific affected firmware versions.

Vulnerability: The vulnerability is an unauthenticated command injection flaw within the web-based management interface of the affected devices. An attacker can send a specially crafted HTTP request to a specific administrative endpoint without needing to provide any credentials. This request can contain arbitrary operating system commands which are not properly sanitized by the device, leading to their execution with root-level privileges. This allows a remote attacker with network access to the device's web interface to gain full administrative control.

Business Impact

This vulnerability is rated as High severity with a CVSS score of 8.8. Successful exploitation allows an attacker to gain complete control over the affected network device, which often serves as a gateway to the internal network. The potential consequences include interception and redirection of sensitive network traffic, deployment of malware or ransomware, using the compromised device as a pivot point for further attacks into the corporate network, and disruption of internet connectivity, leading to operational downtime. The device could also be co-opted into a botnet for use in larger-scale attacks against other targets.

Remediation Plan

Immediate Action: Organizations must apply the security updates provided by D-Link immediately to all affected devices. After patching, it is crucial to monitor for any signs of compromise by reviewing system and access logs for unusual activity that occurred prior to the patch deployment.

Proactive Monitoring: Monitor network traffic for anomalous outbound connections originating from the D-Link devices. Review web server access logs on the devices for suspicious requests, particularly those containing shell metacharacters (e.g., ;, |, &&, $(...)). If possible, centralize device logs to a SIEM to correlate and alert on suspicious command execution or unauthorized configuration changes.

Compensating Controls: If patching cannot be performed immediately, restrict access to the device's web management interface to a trusted management network or specific IP addresses. If remote management is not a business requirement, disable it entirely. Consider placing the device behind a Web Application Firewall (WAF) with rulesets designed to block common command injection attempts.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of November 23, 2025, there are no known public exploits for this vulnerability. However, given the high severity and the straightforward nature of command injection flaws, it is highly probable that proof-of-concept (PoC) exploits will be developed and released by security researchers or malicious actors in the near future. The vulnerability is not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog.

Analyst Recommendation

Due to the high CVSS score of 8.8 and the critical risk of unauthenticated remote code execution, this vulnerability poses a significant threat to the network perimeter and internal security. We strongly recommend that all affected D-Link devices be patched on an emergency basis. While this vulnerability is not yet on the CISA KEV list, its severity makes it a prime target for future exploitation. If immediate patching is not feasible, implement the compensating controls outlined above, particularly restricting access to the management interface, to urgently reduce the attack surface.

Executive Summary:
A high-severity vulnerability has been discovered in multiple D-Link router models, allowing a remote attacker to potentially take full control of the device without any credentials. Successful exploitation could lead to data theft, network disruption, or using the compromised device to attack other systems. Immediate patching is critical to mitigate this significant security risk.

Vulnerability Details

CVE-ID: CVE-2025-13547

Affected Software: D-Link Multiple Products

Affected Versions: Specific versions of D-Link DIR-822K and DWR-M920. See vendor advisory for a complete list of affected versions and firmware.

Vulnerability: The vulnerability is an unauthenticated command injection flaw within the web management interface of the affected devices. A remote attacker can send a specially crafted HTTP request to the device's web server. This request can contain arbitrary operating system commands, which are then executed on the device with the highest level of privileges (root), allowing the attacker to gain complete control.

Business Impact

This vulnerability is rated as High severity with a CVSS score of 8.8. A successful exploit would grant an attacker complete administrative control over the affected network device. This could lead to severe consequences, including the interception of sensitive network traffic, disruption of internet connectivity (Denial of Service), and using the compromised router as a foothold to launch further attacks against the internal network. The compromised device could also be co-opted into a botnet for use in broader malicious campaigns, posing a reputational risk to the organization.

Remediation Plan

Immediate Action: Apply the security updates provided by D-Link to all affected devices immediately. After patching, it is crucial to monitor for any signs of exploitation attempts by reviewing firewall and device access logs for unusual or malicious activity that may have occurred prior to the update.

Proactive Monitoring: Security teams should monitor network traffic for anomalous outbound connections originating from the affected routers. Review web server logs on the devices for suspicious requests, specifically looking for patterns indicative of command injection, such as shell metacharacters (e.g., ;, |, &&, $()) in request parameters.

Compensating Controls: If patching cannot be performed immediately, disable remote administration access from the internet. If remote access is required, restrict it to a limited set of trusted IP addresses via firewall rules. Network segmentation should be considered to isolate the vulnerable devices from critical internal assets.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of November 23, 2025, there are no known public exploits or active exploitation campaigns targeting this vulnerability. However, due to the high severity and the relative ease of exploitation for unauthenticated command injection flaws in network devices, proof-of-concept code is likely to be developed and published by security researchers or threat actors in the near future.

Analyst Recommendation

This vulnerability presents a critical risk that requires immediate attention. Given the CVSS score of 8.8, which signifies a highly impactful and easily exploitable flaw, organizations must prioritize the deployment of vendor-supplied patches. Although this CVE is not currently on the CISA KEV list, vulnerabilities of this nature are prime targets for automated attacks. We strongly recommend identifying and patching all affected D-Link devices without delay to prevent a network compromise.

Executive Summary:
A high-severity vulnerability has been identified in multiple D-Link products, allowing an unauthenticated remote attacker to potentially execute arbitrary code and gain full control of affected devices. Successful exploitation of this vulnerability could lead to a complete compromise of the network device, enabling attackers to intercept traffic, access the internal network, and launch further attacks. Organizations are strongly advised to apply the vendor-supplied security patches immediately to mitigate this significant risk.

Vulnerability Details

CVE-ID: CVE-2025-13191

Affected Software: D-Link Multiple Products

Affected Versions: The vulnerability is confirmed in firmware version 2_06_b09_beta for the D-Link DIR-816L. See vendor advisory for a complete list of all affected products and versions.

Vulnerability: This vulnerability is a command injection flaw in the web management interface of the affected devices. An unauthenticated attacker can send a specially crafted HTTP request to a specific endpoint on the device. Due to insufficient input validation, the attacker's payload is passed directly to the underlying operating system and executed with root privileges, resulting in remote code execution (RCE).

Business Impact

This vulnerability is rated as High severity with a CVSS score of 8.8, posing a critical risk to the organization. A successful exploit would grant an attacker complete control over the compromised network device. This could lead to severe consequences, including unauthorized access to sensitive internal network resources, interception and theft of network traffic (data exfiltration), disruption of network services, and the use of the compromised device as a pivot point for further attacks against the internal network or as part of a botnet.

Remediation Plan

Immediate Action: Apply the vendor-provided security updates to all affected D-Link devices immediately. After patching, it is crucial to monitor for any signs of post-patch exploitation attempts and review device access logs for any anomalous or unauthorized activity that may have occurred prior to remediation.

Proactive Monitoring: Security teams should actively monitor for indicators of compromise. This includes inspecting network traffic for unusual outbound connections from D-Link devices, checking web server logs on the devices for suspicious requests containing shell metacharacters, and monitoring for unexpected system reboots or configuration changes.

Compensating Controls: If immediate patching is not feasible, implement the following controls as a temporary measure:

• Restrict access to the device's web management interface to a trusted internal network segment or specific IP addresses.
• Use a firewall to block all external, untrusted access to the device's management ports (e.g., TCP 80, 443).
• Ensure device logs are forwarded to a central SIEM for correlation and analysis.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of November 15, 2025, there are no known public proof-of-concept exploits for this vulnerability. However, given the high severity and the relative simplicity of command injection flaws, it is highly probable that threat actors are actively working to reverse-engineer the patch and develop a functional exploit.

Analyst Recommendation

Due to the high CVSS score of 8.8, this vulnerability presents a critical threat and must be addressed with urgency. Although CVE-2025-13191 is not currently listed on the CISA KEV catalog, its severity makes it a prime candidate for future inclusion and active exploitation. We strongly recommend that organizations prioritize the immediate patching of all affected D-Link devices. If patching cannot be performed immediately, the compensating controls listed above must be implemented without delay to reduce the attack surface.

Executive Summary:
A high-severity vulnerability has been identified in multiple D-Link products, allowing a remote, unauthenticated attacker to potentially execute arbitrary code on affected devices. Successful exploitation could grant an attacker complete control over the network router, leading to data interception, network disruption, or unauthorized access to the internal network.

Vulnerability Details

CVE-ID: CVE-2025-13190

Affected Software: D-Link Multiple Products

Affected Versions: D-Link DIR-816L firmware version 2_06_b09_beta is confirmed affected. See vendor advisory for a complete list of affected products and versions.

Vulnerability: This vulnerability is an unauthenticated command injection flaw in the web management interface of the affected devices. An attacker can exploit this by sending a specially crafted HTTP request to the device, which injects and executes arbitrary operating system commands with root-level privileges. No prior authentication or user interaction is required for a successful attack.

Business Impact

This vulnerability presents a high severity risk with a CVSS score of 8.8. A successful exploit would grant an attacker full administrative control over the compromised network device. This could lead to severe consequences, including the interception of sensitive network traffic, denial-of-service conditions, and using the compromised device as a pivot point to launch further attacks against the internal corporate network. The operational disruption and potential for data exfiltration pose a significant risk to business continuity and data confidentiality.

Remediation Plan

Immediate Action: Apply the security updates provided by the vendor across all affected D-Link devices immediately. After patching, review device access and system logs for any signs of compromise that may have occurred prior to remediation.

Proactive Monitoring: Implement enhanced monitoring of network traffic to and from the management interfaces of D-Link devices. Specifically, look for unusual outbound connections, unexpected configuration changes, or anomalous activity in web server logs that could indicate exploitation attempts or a successful compromise.

Compensating Controls: If immediate patching is not feasible, restrict access to the device's web management interface from the internet. If remote management is necessary, limit access to a trusted set of IP addresses via firewall rules. Network segmentation should also be employed to limit the potential impact of a compromised device on other critical network assets.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of November 15, 2025, there are no known public proof-of-concept exploits or active exploitation of this vulnerability in the wild. However, due to the high severity and low complexity of the attack, threat actors are likely to develop and deploy exploits rapidly by reverse-engineering the available patches.

Analyst Recommendation

Given the high severity (CVSS 8.8) and the potential for complete device takeover, immediate action is required. Although this vulnerability is not currently on the CISA Known Exploited Vulnerabilities (KEV) catalog, its characteristics make it a prime target for future exploitation. Organizations are strongly advised to prioritize patching all affected D-Link devices without delay. If patching is not immediately possible, implement the recommended compensating controls to reduce the attack surface and mitigate risk.

Executive Summary:
A high-severity vulnerability has been identified in multiple D-Link products, including the DIR-816L router. This flaw could allow an unauthenticated remote attacker to execute arbitrary commands on affected devices, leading to a complete system compromise. Successful exploitation poses a significant risk to network integrity, data confidentiality, and could allow attackers to gain a foothold into the internal network.

Vulnerability Details

CVE-ID: CVE-2025-13189

Affected Software: D-Link Multiple Products

Affected Versions: D-Link DIR-816L firmware version 2_06_b09_beta is confirmed vulnerable. See vendor advisory for a complete list of affected products and versions.

Vulnerability: This vulnerability is a command injection flaw within the web management interface of the affected devices. An unauthenticated attacker can send a specially crafted HTTP request to a specific administrative endpoint. The device fails to properly sanitize user-supplied input within this request, allowing the attacker to inject and execute arbitrary operating system commands with the privileges of the root user.

Business Impact

This vulnerability is rated as High severity with a CVSS score of 8.8. A successful exploit would grant an attacker complete control over the affected network device. The potential consequences include interception of network traffic, unauthorized access to the internal network, disruption of network services (Denial of Service), and the ability to use the compromised device as a pivot point for further attacks or to incorporate it into a botnet. This poses a direct risk to data confidentiality, operational continuity, and the overall security posture of the organization.

Remediation Plan

Immediate Action: Apply the security updates provided by D-Link to all affected devices immediately. Prioritize patching for devices with management interfaces exposed to the internet. After patching, review device access logs for any signs of compromise that may have occurred before the update was applied.

Proactive Monitoring: Monitor network traffic for unusual outbound connections originating from the D-Link devices. Review web server logs on the devices for suspicious GET or POST requests to administrative CGI scripts or endpoints, especially those containing shell metacharacters (e.g., ;, |, &, $( )). Set up alerts for unexpected device reboots or configuration changes.

Compensating Controls: If immediate patching is not feasible, restrict access to the device's web management interface. Ensure the interface is not exposed to the internet and is only accessible from a trusted, isolated management network segment. Implement firewall rules or Access Control Lists (ACLs) to block all untrusted traffic to the device's management ports (e.g., TCP/80, TCP/443).

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of November 15, 2025, there are no known public proof-of-concept exploits or active exploitation campaigns targeting this vulnerability. However, given the high severity and the nature of the flaw (unauthenticated remote code execution), it is highly probable that a functional exploit will be developed and released by security researchers or malicious actors in the near future.

Analyst Recommendation

Due to the critical risk posed by this vulnerability (CVSS 8.8), we strongly recommend that organizations identify all affected D-Link devices within their environment and apply the vendor-supplied patches with the highest priority. While this CVE is not currently on the CISA KEV list, its high impact makes it a prime candidate for future inclusion if widespread exploitation occurs. If patching is delayed, the compensating controls outlined above must be implemented immediately to reduce the attack surface.

Executive Summary:
A critical vulnerability has been identified in certain D-Link router models, allowing a remote, unauthenticated attacker to gain complete control of the device. This flaw is due to a stack-based buffer overflow and is easily exploitable, with a public exploit already available. As the affected products are no longer supported by the vendor, they cannot be patched, posing a significant and permanent risk to network security.

Vulnerability Details

CVE-ID: CVE-2025-13188

Affected Software: D-Link DIR-816L

Affected Versions: DIR-816L firmware version 2_06_b09_beta. Other versions may also be affected; see vendor advisory for specific details.

Vulnerability: A remote, unauthenticated stack-based buffer overflow vulnerability exists in the authenticationcgi_main function of the device's web server. An attacker can send a specially crafted POST request to the /authentication.cgi endpoint with an excessively long string in the Password parameter. This overflows the buffer on the stack, allowing the attacker to overwrite critical program data and execute arbitrary code on the device, likely with root privileges.

Business Impact

This vulnerability is rated as critical severity with a CVSS score of 9.8. Successful exploitation allows an attacker to gain full administrative control over the affected router. This can lead to severe consequences, including interception of all network traffic (man-in-the-middle attacks), unauthorized access to the internal network, deployment of malware, and using the compromised device as part of a botnet for launching further attacks like Distributed Denial-of-Service (DDoS). For a business, this translates to data breaches, network downtime, and a compromised network perimeter.

Remediation Plan

Immediate Action: The vendor no longer supports the affected product, meaning no security patches will be released. The primary and most effective remediation is to immediately decommission and replace the affected D-Link DIR-816L devices with a supported model. Until replacement is complete, restrict all external access to the device's management interface.

Proactive Monitoring: Monitor network traffic for anomalous POST requests to the /authentication.cgi file, specifically looking for requests with abnormally long values for the Password parameter. Review firewall and web server logs for connection attempts to this endpoint from untrusted external sources. Monitor the device for unusual outbound traffic, which could indicate a successful compromise.

Compensating Controls: If immediate replacement is not possible, implement the following controls as a temporary measure:

• Use a firewall to block all external (WAN) access to the router's web-based management interface.
• If possible, use an upstream web application firewall (WAF) or Intrusion Prevention System (IPS) to inspect traffic and block requests matching the exploit signature.
• Segment the network to isolate the vulnerable router from critical internal assets, limiting the potential impact of a compromise.

Exploitation Status

Public Exploit Available: true

Analyst Notes: As of the publication date of Nov 14, 2025, a functional public exploit is available for this vulnerability. The End-of-Life (EOL) status of the hardware means that it will remain permanently vulnerable, making it an attractive target for attackers scanning for low-effort targets.

Analyst Recommendation

Given the critical severity (CVSS 9.8), the availability of a public exploit, and the End-of-Life status of the product, this vulnerability represents an unacceptable risk. We strongly recommend that all identified D-Link DIR-816L routers be immediately removed from the network and replaced with currently supported hardware. Compensating controls should be considered a temporary bridge to replacement and not a long-term solution. While not currently on the CISA KEV list, its characteristics make it a prime candidate for inclusion, and organizations should treat it with the highest priority.

Executive Summary:
A high-severity vulnerability has been discovered in multiple D-Link products, allowing an unauthenticated remote attacker to gain complete control over affected devices. Successful exploitation could lead to network traffic interception, unauthorized access to the internal network, and the deployment of malware, posing a significant risk to network security and data confidentiality. Immediate patching is required to mitigate the threat of a full system compromise.

Vulnerability Details

CVE-ID: CVE-2025-10034

Affected Software: D-Link Multiple Products

Affected Versions: See vendor advisory for a complete list of affected products and versions. The D-Link DIR-825 is a known affected model.

Vulnerability: This vulnerability is a remote command injection flaw in the web management interface of the affected devices. An unauthenticated attacker can send a specially crafted HTTP request to a specific service endpoint on the device. Due to insufficient input sanitization, malicious shell commands can be embedded within the request parameters, which are then executed by the underlying operating system with root-level privileges, resulting in a complete compromise of the device.

Business Impact

This vulnerability presents a High severity risk with a CVSS score of 8.8. Exploitation could have a significant business impact, including a complete loss of confidentiality, integrity, and availability of the network segment protected by the device. An attacker could intercept sensitive data, pivot to attack other systems on the internal network, disrupt internet connectivity, or incorporate the compromised device into a botnet for use in larger attacks like Distributed Denial-of-Service (DDoS). This can lead to data breaches, operational downtime, and reputational damage.

Remediation Plan

Immediate Action: Apply vendor-supplied security updates to all affected D-Link devices immediately, prioritizing those with management interfaces exposed to the internet. After patching, review device access logs for any signs of compromise that may have occurred prior to the update.

Proactive Monitoring: Monitor network traffic for anomalous outbound connections from affected devices. Review web server logs on the devices for suspicious requests containing shell metacharacters (e.g., ;, |, &&, $()). Implement alerts for unusual spikes in CPU or memory utilization on these devices, which could indicate malicious activity.

Compensating Controls: If immediate patching is not feasible, implement the following controls:

• Disable remote/WAN management access to the device's administrative interface.
• Restrict access to the management interface to a dedicated, trusted administrative network or specific IP addresses.
• Deploy an Intrusion Prevention System (IPS) with signatures capable of detecting and blocking command injection attempts.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of September 7, 2025, there are no known public exploits or reports of this vulnerability being actively exploited in the wild. However, due to the high severity and the relative simplicity of exploiting command injection flaws, it is highly probable that threat actors will develop and release proof-of-concept code in the near future.

Analyst Recommendation

Given the high CVSS score of 8.8, this vulnerability requires immediate attention. Organizations must prioritize the deployment of the vendor-provided patches across all affected D-Link devices. Although this CVE is not currently listed on the CISA KEV list, its severity makes it a strong candidate for future inclusion. If patching cannot be performed immediately, the compensating controls outlined above must be implemented as a matter of urgency to reduce the attack surface and mitigate the risk of a network compromise.

Executive Summary:
A critical path traversal vulnerability, identified as CVE-2024-0769, exists in the D-Link DIR-859 router. This flaw allows an unauthenticated attacker with network access to read sensitive files on the device, which could expose administrative credentials and lead to a complete system compromise. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has confirmed this vulnerability is being actively exploited in the wild, posing an immediate and severe threat to organizations using this hardware.

Vulnerability Details

CVE-ID: CVE-2024-0769

Affected Software: D-Link DIR-859 Router

Affected Versions: See vendor advisory for specific affected versions.

Vulnerability: This vulnerability is a path traversal (also known as "directory traversal") flaw in the router's web management interface. An unauthenticated remote attacker can exploit this by sending a specially crafted HTTP request containing "dot-dot-slash" (../) sequences to the device. This technique allows the attacker to bypass access controls and navigate outside of the intended web server root directory, enabling them to read arbitrary files from the router's underlying file system. Successful exploitation could grant access to sensitive files such as /etc/passwd, configuration backups, or system logs containing credentials.

Business Impact

The business impact of this vulnerability is rated as Critical, with a CVSS score of 9.5. Exploitation can lead to a severe security breach with significant operational consequences. An attacker could retrieve administrative credentials, Wi-Fi passwords, and detailed network configuration, effectively gaining full control over the router. This compromised device could then be used to launch man-in-the-middle attacks to intercept or alter network traffic, serve as a pivot point to attack other internal network assets, or be conscripted into a botnet. The inclusion in the CISA KEV catalog confirms active exploitation, meaning the risk is not theoretical but an immediate and ongoing threat.

Remediation Plan

Immediate Action: All organizations must take immediate action to address this vulnerability. Per CISA's directive for federal agencies, the deadline for remediation is extremely short: FEDERAL DEADLINE: July 15, 2025 (5 days). Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. If a patch from D-Link is available, it must be applied immediately. If no patch or mitigation is available, the device must be disconnected from the network and decommissioned.

Proactive Monitoring: Monitor web server access logs on the router for any requests containing path traversal sequences (e.g., ../, %2e%2e%2f). Network traffic should be analyzed for anomalous outbound connections from the router, which could indicate data exfiltration or command-and-control (C2) communication. Monitor for any unauthorized configuration changes or unexpected system reboots.

Compensating Controls: If patching cannot be performed immediately, implement the following controls to reduce the risk of exploitation:

• Restrict all access to the router's web management interface to a secure, isolated management network or specific trusted IP addresses.
• Disable remote/WAN management access to ensure the interface is not exposed to the public internet.
• If possible, place a Web Application Firewall (WAF) or Intrusion Prevention System (IPS) in front of the device with rules to detect and block path traversal attack patterns.

Exploitation Status

Public Exploit Available: True

Analyst Notes: As of June 24, 2025, this vulnerability is confirmed to be actively exploited in the wild, evidenced by its inclusion in the CISA Known Exploited Vulnerabilities (KEV) catalog. Threat actors are actively scanning for and targeting vulnerable D-Link DIR-859 routers. The primary goal of these attacks is likely to gain initial access to corporate or home networks for data theft, espionage, or to expand botnet operations. The short deadline set by CISA highlights the widespread and critical nature of this threat.

Analyst Recommendation

Given the critical severity (CVSS 9.5) and confirmed active exploitation in the wild, this vulnerability requires immediate and decisive action. We recommend that organizations immediately identify all D-Link DIR-859 routers within their environment using asset inventory systems. The primary course of action must be to apply the vendor-supplied patch or firmware update without delay, treating this as an emergency change. If a patch is not available, the only acceptable alternative is to immediately isolate the devices from the network and begin the process of replacing them. Due to its KEV status, failing to remediate this vulnerability presents an unacceptable risk of network compromise.