---METADATA---
VENDOR: FreeRDP
PRODUCT: FreeRDP
AFFECTED_VERSIONS: 0 up to (excluding) 3.29.0
CONFIDENCE: high
MISSING: none
---END_METADATA---

Description Summary:
A heap-based buffer overflow vulnerability exists in FreeRDP due to improper handling of the audio input channel, potentially leading to remote code execution.

Executive Summary:
FreeRDP is affected by a heap-based buffer overflow vulnerability in its audio input channel processing, which may result in remote code execution.

Vulnerability Details

CVE-ID: CVE-2026-68580

Affected Software: FreeRDP FreeRDP

Affected Versions: 0 up to (excluding) 3.29.0

Vulnerability: This is a CWE-122 heap-based buffer overflow vulnerability. The flaw is triggered via the audio input channel, and while it requires user interaction, it does not require prior authentication to target the service.

Business Impact

The vulnerability carries a CVSS score of 7.5, reflecting its potential for severe impact. Successful exploitation could allow an attacker to execute arbitrary code with the privileges of the FreeRDP process, leading to a complete compromise of the client or server system running the affected software.

Remediation Plan

Immediate Action: Upgrade all instances of FreeRDP to version 3.29.0 or later to apply the necessary memory safety fixes.

Proactive Monitoring: Review system logs for unexpected crashes of the RDP service, which could indicate an attempted heap overflow exploit.

Compensating Controls: Utilize a Web Application Firewall or network intrusion detection system to monitor and block malformed RDP traffic patterns if immediate patching is not possible.

Exploitation Status

Public Exploit Available: Unknown

Analyst Notes: As of August 3, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The complexity of triggering heap-based overflows often requires specific environmental conditions for successful execution.

Analyst Recommendation

Due to the remote code execution potential of this buffer overflow, all users of FreeRDP must update to version 3.29.0 immediately. Ensuring that all client and server software is running the latest patched version is critical to preventing unauthorized remote access.

---METADATA---
VENDOR: FreeRDP
PRODUCT: FreeRDP
AFFECTED_VERSIONS: 0 up to (excluding) 3.29.0
CONFIDENCE: high
MISSING: none
---END_METADATA---

Description Summary:
A NULL pointer dereference vulnerability in FreeRDP allows for service disruption during smartcard cleanup operations.

Executive Summary:
A NULL pointer dereference vulnerability in FreeRDP versions prior to 3.29.0 poses a high risk of application crashes.

Vulnerability Details

CVE-ID: CVE-2026-67304

Affected Software: FreeRDP FreeRDP

Affected Versions: 0 up to (excluding) 3.29.0

Vulnerability: This vulnerability is a NULL pointer dereference (CWE-476) occurring during smartcard cleanup processes. The vulnerability is exploitable by an unauthenticated attacker over the network.

Business Impact

Successful exploitation leads to a denial of service, causing the FreeRDP application to crash. Given the CVSS score of 7.5, this high-severity flaw can disrupt remote access workflows and organizational productivity, particularly for teams relying on RDP for infrastructure management.

Remediation Plan

Immediate Action: Update FreeRDP to version 3.29.0 or later to incorporate the necessary memory safety fixes.

Proactive Monitoring: Monitor system logs for unexpected service terminations or recurring crash reports related to the FreeRDP process.

Compensating Controls: Ensure that remote access gateways are behind a firewall and restrict RDP access to trusted networks to reduce the attack surface.

Exploitation Status

Public Exploit Available: Unknown.

Analyst Notes: As of August 2, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The flaw is inherently dangerous due to its potential to crash critical remote access services, but it does not appear to be currently targeted by malicious actors.

Analyst Recommendation

The severity of this vulnerability necessitates immediate attention to maintain service availability. Administrators should prioritize patching all instances of FreeRDP to version 3.29.0 to eliminate the risk of service disruption caused by this NULL pointer dereference.

---METADATA---
VENDOR: FreeRDP
PRODUCT: FreeRDP
AFFECTED_VERSIONS: 0 up to (excluding) 3.29.0
CONFIDENCE: high
MISSING: none
---END_METADATA---

Description Summary:
An out of bounds read vulnerability in FreeRDP versions before 3.29.0 may allow for denial of service via polygon asynchronous messages.

Executive Summary:
An out of bounds read vulnerability in FreeRDP, affecting versions prior to 3.29.0, may result in service instability.

Vulnerability Details

CVE-ID: CVE-2026-67301

Affected Software: FreeRDP FreeRDP

Affected Versions: 0 up to (excluding) 3.29.0

Vulnerability: This vulnerability is an out of bounds read (CWE-125) occurring during the processing of polygon asynchronous messages. It is exploitable by an unauthenticated attacker over the network.

Business Impact

Exploitation of this flaw can lead to service crashes, causing significant disruption to remote connection services. The CVSS score of 7.5 confirms the high severity of the issue, primarily due to the potential for an unauthenticated user to remotely cause a denial of service condition.

Remediation Plan

Immediate Action: Update to FreeRDP version 3.29.0 or newer to remediate the vulnerability.

Proactive Monitoring: Monitor for service crashes and analyze logs for malformed network packets that might correlate with attempts to trigger an out of bounds read.

Compensating Controls: Implement firewall rules to limit the exposure of the FreeRDP service to known and trusted IP addresses.

Exploitation Status

Public Exploit Available: Unknown

Analyst Notes: As of August 2, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. While the vulnerability exists, the risk is mitigated by the lack of confirmed public exploitation methods at this time.

Analyst Recommendation

Security teams must prioritize updating to version 3.29.0 to ensure the integrity and availability of the FreeRDP software. Regular updates are the most effective defense against this and similar remote vulnerabilities.

---METADATA---
VENDOR: FreeRDP
PRODUCT: FreeRDP
AFFECTED_VERSIONS: 0 up to (excluding) 3.29.0
CONFIDENCE: high
MISSING: none
---END_METADATA---

Description Summary:
A use after free vulnerability in FreeRDP prior to 3.29.0 allows for potential denial of service through the asynchronous message proxy.

Executive Summary:
A use after free vulnerability in FreeRDP, affecting versions prior to 3.29.0, creates a risk of denial of service attacks.

Vulnerability Details

CVE-ID: CVE-2026-67300

Affected Software: FreeRDP FreeRDP

Affected Versions: 0 up to (excluding) 3.29.0

Vulnerability: This is a use after free (CWE-416) vulnerability that occurs within the asynchronous message proxy functionality of FreeRDP. The vulnerability is accessible to unauthenticated attackers over the network.

Business Impact

Successful exploitation can result in the termination of the FreeRDP service, leading to system downtime. With a CVSS score of 7.5, the vulnerability is considered high risk because it directly impacts the availability of remote desktop connectivity, which is often a critical business dependency.

Remediation Plan

Immediate Action: Upgrade all deployments of FreeRDP to version 3.29.0 or higher immediately.

Proactive Monitoring: Review security and system event logs for unusual activity or frequent service restarts that may indicate an attempt to trigger this vulnerability.

Compensating Controls: Utilize network-level access controls or VPNs to restrict access to the FreeRDP service to authorized users only.

Exploitation Status

Public Exploit Available: Unknown

Analyst Notes: As of August 2, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The lack of a known exploit does not diminish the necessity of patching, as the vulnerability is readily accessible to network-based attackers.

Analyst Recommendation

It is critical to address this vulnerability by applying the vendor-supplied update to version 3.29.0. Organizations should treat this as a high-priority maintenance task to maintain the stability and security of their remote access infrastructure.

---METADATA---
VENDOR: FreeRDP
PRODUCT: FreeRDP
AFFECTED_VERSIONS: 0 up to (excluding) 3.29.0
CONFIDENCE: high
MISSING: none
---END_METADATA---

Description Summary:
A use after free vulnerability exists in FreeRDP versions prior to 3.29.0, potentially allowing for denial of service via window icon asynchronous messages.

Executive Summary:
A use after free vulnerability in FreeRDP, affecting versions prior to 3.29.0, poses a significant risk of service disruption.

Vulnerability Details

CVE-ID: CVE-2026-67299

Affected Software: FreeRDP FreeRDP

Affected Versions: 0 up to (excluding) 3.29.0

Vulnerability: This vulnerability is a use after free (CWE-416) flaw triggered during the handling of window icon asynchronous messages. The vulnerability is exploitable by an unauthenticated attacker over the network.

Business Impact

The exploitation of this vulnerability can lead to a denial of service, causing the FreeRDP client or server to crash or become unresponsive. While the CVSS score of 7.5 indicates a high severity rating, the primary impact is limited to availability, potentially disrupting critical remote access workflows and business operations.

Remediation Plan

Immediate Action: Update FreeRDP to version 3.29.0 or later to incorporate the necessary security fixes.

Proactive Monitoring: Monitor system logs for repeated crash events or unexpected service terminations related to the FreeRDP process.

Compensating Controls: Ensure that remote access services are restricted to trusted network segments to limit exposure to potential attackers.

Exploitation Status

Public Exploit Available: Unknown

Analyst Notes: As of August 2, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The flaw is inherently dangerous due to its potential to disrupt service, but it does not currently have a confirmed weaponized exploit in the wild.

Analyst Recommendation

Given the high severity of this vulnerability, administrators should prioritize updating all instances of FreeRDP to version 3.29.0. Applying this update is the most effective way to eliminate the risk of service disruption associated with this use after free flaw.

---METADATA---
VENDOR: FreeRDP
PRODUCT: FreeRDP
AFFECTED_VERSIONS: 0 up to (excluding) 3.29.0
CONFIDENCE: high
MISSING: none
---END_METADATA---

Description Summary:
An integer underflow vulnerability exists in FreeRDP within the RAIL order length processing, potentially leading to heap buffer overflows and remote code execution or crashes.

Executive Summary:
An integer underflow vulnerability in FreeRDP prior to 3.29.0 may allow an unauthenticated remote attacker to trigger a heap buffer overflow.

Vulnerability Details

CVE-ID: CVE-2026-67298

Affected Software: FreeRDP FreeRDP

Affected Versions: 0 up to (excluding) 3.29.0

Vulnerability: The vulnerability is an integer underflow (CWE-191) occurring during the processing of RAIL order lengths. This flaw can be triggered by an unauthenticated remote attacker, potentially causing a heap buffer overflow.

Business Impact

A heap buffer overflow can lead to unauthorized code execution or service crashes, both of which are high-impact events. Given the CVSS score of 7.5, this vulnerability represents a significant security risk that could result in total system compromise or prolonged downtime.

Remediation Plan

Immediate Action: Update all instances of FreeRDP to version 3.29.0 immediately to mitigate the risk of memory corruption.

Proactive Monitoring: Monitor logs for suspicious RDP traffic patterns and implement endpoint protection to detect unusual process behavior or memory access violations.

Compensating Controls: Restrict network access to the RDP service using VPNs or firewalls to limit the ability of unauthorized parties to reach the vulnerable code path.

Exploitation Status

Public Exploit Available: Unknown

Analyst Notes: As of August 2, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. Integer underflow vulnerabilities of this nature are highly dangerous as they often serve as the foundation for more complex exploit chains.

Analyst Recommendation

This vulnerability is of high concern due to the potential for memory corruption and subsequent exploitation. Security teams must treat this as a priority update, ensuring all vulnerable FreeRDP installations are upgraded to version 3.29.0 as soon as possible.

---METADATA---
VENDOR: FreeRDP
PRODUCT: FreeRDP
AFFECTED_VERSIONS: 0 up to (excluding) 3.29.0
CONFIDENCE: high
MISSING: none
---END_METADATA---

Description Summary:
FreeRDP is vulnerable to resource exhaustion through improper handling of chunked HTTP responses, which can be exploited by an unauthenticated attacker to cause a denial of service.

Executive Summary:
A critical resource exhaustion vulnerability in FreeRDP prior to 3.29.0 allows unauthenticated remote attackers to cause service instability.

Vulnerability Details

CVE-ID: CVE-2026-67297

Affected Software: FreeRDP FreeRDP

Affected Versions: 0 up to (excluding) 3.29.0

Vulnerability: This issue involves the allocation of resources without limits or throttling (CWE-770) when processing chunked HTTP responses. An unauthenticated attacker can leverage this to exhaust system resources, leading to a denial of service.

Business Impact

The potential for resource exhaustion poses a direct threat to the availability of systems relying on FreeRDP. With a CVSS score of 7.5, this vulnerability represents a high risk to operational uptime and should be addressed promptly to prevent exploitation-induced outages.

Remediation Plan

Immediate Action: Upgrade to FreeRDP version 3.29.0 or higher to implement the required resource management patches.

Proactive Monitoring: Monitor memory and CPU usage on servers running FreeRDP to identify potential resource exhaustion spikes indicative of an attack.

Compensating Controls: Utilize a Web Application Firewall or similar traffic filtering solution to inspect and limit malformed or excessive HTTP traffic directed at the service.

Exploitation Status

Public Exploit Available: Unknown

Analyst Notes: As of August 2, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The flaw's reliance on resource management makes it a classic candidate for denial of service attacks.

Analyst Recommendation

Maintaining system availability is paramount, and this vulnerability directly threatens that goal. Organizations must prioritize the deployment of version 3.29.0 to remediate the resource management flaw and protect against potential service degradation.

---METADATA---
VENDOR: FreeRDP
PRODUCT: FreeRDP
AFFECTED_VERSIONS: 0 up to (excluding) 3.29.0
CONFIDENCE: high
MISSING: none
---END_METADATA---

Description Summary:
FreeRDP is susceptible to a denial of service vulnerability due to improper input validation within the RDPEI PDU handling process, allowing remote attackers to crash the service.

Executive Summary:
A remote denial of service vulnerability in FreeRDP versions prior to 3.29.0 poses a significant risk to service availability.

Vulnerability Details

CVE-ID: CVE-2026-67296

Affected Software: FreeRDP FreeRDP

Affected Versions: 0 up to (excluding) 3.29.0

Vulnerability: The vulnerability is caused by improper input validation (CWE-20) in the RDPEI PDU processing logic. It is exploitable by an unauthenticated remote attacker who can trigger a service crash.

Business Impact

Successful exploitation results in a denial of service, which can cause significant disruption to remote desktop operations and business continuity. Given the CVSS score of 7.5, this high severity vulnerability necessitates immediate attention to prevent service outages in critical infrastructure.

Remediation Plan

Immediate Action: Update FreeRDP to version 3.29.0 or later to apply the necessary security patches.

Proactive Monitoring: Monitor system logs for unusual crash patterns or recurring service restarts that may indicate attempted exploitation.

Compensating Controls: Implement network access controls to restrict access to the RDP service to trusted IP addresses only, reducing the attack surface.

Exploitation Status

Public Exploit Available: Unknown

Analyst Notes: As of August 2, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The flaw is inherently exploitable by sending malformed RDPEI packets to the target.

Analyst Recommendation

The risk of service disruption is high, particularly for organizations relying heavily on FreeRDP for remote access. Administrators should prioritize the update to version 3.29.0 to eliminate the vulnerability and ensure the stability of their remote desktop environments.

---METADATA---
VENDOR: FreeRDP
PRODUCT: FreeRDP
AFFECTED_VERSIONS: 0 up to 3.29.0
CONFIDENCE: high
MISSING: none
---END_METADATA---

Description Summary:
An out-of-bounds read vulnerability exists in FreeRDP before version 3.29.0, specifically within the glyph fragment addition functionality.

Executive Summary:
An unauthenticated remote attacker can trigger a denial of service in FreeRDP by exploiting a heap out-of-bounds read vulnerability during glyph fragment processing.

Vulnerability Details

CVE-ID: CVE-2026-67291

Affected Software: FreeRDP FreeRDP

Affected Versions: 0 up to 3.29.0

Vulnerability: This is an out-of-bounds read vulnerability (CWE-125) occurring during the processing of glyph fragments. The vulnerability is accessible to unauthenticated attackers over the network.

Business Impact

With a CVSS score of 7.5, this vulnerability presents a significant risk to the availability of systems using FreeRDP. Exploitation causes the application to crash, resulting in service downtime that may affect critical business operations and remote access capabilities.

Remediation Plan

Immediate Action: Upgrade to FreeRDP version 3.29.0 or later to resolve the memory safety issue.

Proactive Monitoring: Monitor for unexpected service terminations or memory-related errors in application logs that could suggest exploit attempts.

Compensating Controls: Utilize intrusion prevention systems to detect and block malformed glyph fragment data packets being sent to the RDP service.

Exploitation Status

Public Exploit Available: No

Analyst Notes: As of August 2, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The vulnerability stems from improper bounds checking during the handling of glyph data.

Analyst Recommendation

The vulnerability poses a clear risk to system availability and should be addressed promptly. Organizations are advised to plan and execute an update to version 3.29.0 as part of their standard security maintenance cycle to mitigate this risk.

---METADATA---
VENDOR: FreeRDP
PRODUCT: FreeRDP
AFFECTED_VERSIONS: 0 up to 3.29.0
CONFIDENCE: high
MISSING: none
---END_METADATA---

Description Summary:
An out-of-bounds read vulnerability exists in FreeRDP before version 3.29.0, which can be triggered via the TSMF (Transport Stream Multimedia Framework) component.

Executive Summary:
A heap out-of-bounds read vulnerability in FreeRDP allows an unauthenticated attacker to cause a denial of service through specially crafted TSMF multimedia traffic.

Vulnerability Details

CVE-ID: CVE-2026-67290

Affected Software: FreeRDP FreeRDP

Affected Versions: 0 up to 3.29.0

Vulnerability: This is an out-of-bounds read vulnerability (CWE-125) located within the TSMF implementation. An unauthenticated attacker can trigger this condition by sending malicious network packets, leading to process instability.

Business Impact

The vulnerability carries a CVSS score of 7.5, indicating a high risk of service interruption. A crash caused by an out-of-bounds read can lead to loss of availability for remote sessions, potentially impacting user productivity and administrative workflows.

Remediation Plan

Immediate Action: Apply the security update by upgrading to FreeRDP version 3.29.0 or higher.

Proactive Monitoring: Review security logs for anomalous TSMF protocol traffic or frequent service crashes that might indicate an attempt to trigger the vulnerability.

Compensating Controls: Implement network segmentation to isolate systems running FreeRDP and apply WAF or IPS rules to filter suspicious multimedia-related traffic.

Exploitation Status

Public Exploit Available: No

Analyst Notes: As of August 2, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The vulnerability is triggered by memory access errors during TSMF processing.

Analyst Recommendation

Given the potential for service denial, it is critical to upgrade to the patched version as soon as possible. Organizations should treat this update as a high priority for any infrastructure relying on FreeRDP for remote connectivity.

---METADATA---
VENDOR: FreeRDP
PRODUCT: FreeRDP
AFFECTED_VERSIONS: 0 up to 3.28.0
CONFIDENCE: high
MISSING: none
---END_METADATA---

Description Summary:
FreeRDP is vulnerable to HTTP request header injection because it fails to sanitize control characters in RDP redirection addresses when using an HTTP proxy.

Executive Summary:
A critical vulnerability in FreeRDP allows a malicious server to inject arbitrary HTTP headers and requests, potentially leading to unauthorized operations when connecting through an HTTP proxy.

Vulnerability Details

CVE-ID: CVE-2026-67289

Affected Software: FreeRDP FreeRDP

Affected Versions: 0 up to 3.28.0

Vulnerability: The software fails to validate CRLF and control characters within the TargetNetAddress field of RDP redirection packets. This allows an attacker to manipulate the HTTP CONNECT request line and headers when the client routes traffic through a proxy.

Business Impact

The CVSS score of 9.8 reflects the high potential for request splitting and header injection attacks. This could allow an attacker to hijack proxy connections, perform cross-protocol attacks, or bypass security controls enforced at the proxy level.

Remediation Plan

Immediate Action: Update the FreeRDP client to version 3.29.0 or later.

Proactive Monitoring: Monitor proxy logs for suspicious or malformed CONNECT requests originating from FreeRDP clients.

Compensating Controls: Restrict or disable HTTP proxy usage for RDP connections if the update cannot be applied immediately, or ensure the proxy is configured to reject requests with invalid header characters.

Exploitation Status

Public Exploit Available: Unknown

Analyst Notes: As of Aug 1, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The flaw highlights a common risk when handling untrusted network input in proxy-related logic.

Analyst Recommendation

Due to the critical nature of this injection vulnerability, users of FreeRDP should upgrade to version 3.29.0 as soon as possible. Maintaining current versions is essential to defend against sophisticated network-based attacks.

---METADATA---
VENDOR: FreeRDP
PRODUCT: FreeRDP
AFFECTED_VERSIONS: 0 up to 3.29.0
CONFIDENCE: high
MISSING: none
---END_METADATA---

Description Summary:
A NULL pointer dereference vulnerability exists in FreeRDP before version 3.29.0, which can be triggered via specially crafted smartcard cache data.

Executive Summary:
An unauthenticated remote attacker can cause a denial of service in FreeRDP by exploiting a NULL pointer dereference flaw in smartcard cache processing.

Vulnerability Details

CVE-ID: CVE-2026-67288

Affected Software: FreeRDP FreeRDP

Affected Versions: 0 up to 3.29.0

Vulnerability: This is a NULL pointer dereference vulnerability (CWE-476) occurring within the smartcard cache component. The attack vector is network-based and requires no authentication or user interaction to reach the vulnerable code path.

Business Impact

Successful exploitation of this vulnerability results in a denial of service, causing the FreeRDP application to crash. Given the CVSS score of 7.5, this represents a high-severity risk to business continuity, as it can disrupt remote desktop sessions and administrative access dependent on this protocol implementation.

Remediation Plan

Immediate Action: Update FreeRDP to version 3.29.0 or later to incorporate the necessary security fixes.

Proactive Monitoring: Monitor system logs for unexpected application crashes or service restarts associated with the FreeRDP process.

Compensating Controls: Utilize network-level access controls to restrict access to RDP services to trusted IP addresses only, reducing the exposure to potential attackers.

Exploitation Status

Public Exploit Available: No

Analyst Notes: As of August 2, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The flaw is inherently exploitable by sending a crafted smartcard cache request to a listening service.

Analyst Recommendation

The high severity of this vulnerability necessitates immediate attention to prevent service disruption. Administrators should prioritize updating all instances of FreeRDP to version 3.29.0 to eliminate the risk of denial of service attacks.

---METADATA---
VENDOR: FreeRDP
PRODUCT: FreeRDP
AFFECTED_VERSIONS: 0 up to (excluding) 3.29.0
CONFIDENCE: high
MISSING: none
---END_METADATA---

Description Summary:
FreeRDP contains multiple TLS certificate validation flaws allowing attackers to bypass server identity verification due to improper handling of Common Name and DNS SAN strings.

Executive Summary:
FreeRDP versions before 3.29.0 are vulnerable to TLS certificate validation bypasses, which could allow an attacker to intercept or manipulate encrypted RDP traffic.

Vulnerability Details

CVE-ID: CVE-2026-66402

Affected Software: FreeRDP FreeRDP

Affected Versions: 0 up to (excluding) 3.29.0

Vulnerability: This vulnerability involves improper certificate validation (CWE-295) in several TLS-related functions. An unauthenticated remote attacker can exploit these weaknesses to perform a man-in-the-middle attack by presenting a crafted certificate that the client incorrectly validates.

Business Impact

The ability to bypass TLS server authentication poses a severe risk to organizational confidentiality and integrity. A successful exploit allows an attacker to intercept sensitive data, including RDP credentials and session information, leading to unauthorized access to internal systems. With a CVSS score of 9.8, this flaw represents a critical risk to any environment relying on FreeRDP for secure remote connectivity.

Remediation Plan

Immediate Action: Update FreeRDP to version 3.29.0 or later to ensure proper TLS certificate validation logic is implemented.

Proactive Monitoring: Audit network traffic for suspicious RDP connection patterns and review authentication logs for anomalies that may suggest intercepted or proxied sessions.

Compensating Controls: Ensure all RDP connections are encapsulated within a VPN tunnel or a secondary secure transport layer to limit the impact of potential client-side validation failures.

Exploitation Status

Public Exploit Available: No (exploit_available: false)

Analyst Notes: As of Aug 1, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The flaw is inherently dangerous because it undermines the fundamental trust mechanism of the TLS protocol.

Analyst Recommendation

Organizations using FreeRDP must prioritize patching to version 3.29.0 immediately. Given the critical nature of identity validation bypasses, delaying this update significantly increases the risk of successful interception of remote session traffic by malicious actors.

---METADATA---
VENDOR: FreeRDP
PRODUCT: FreeRDP
AFFECTED_VERSIONS: 0 up to (excluding) 3.28.0
CONFIDENCE: high
MISSING: none
---END_METADATA---

Description Summary:
A heap-based buffer overflow in FreeRDP's crypto_rsa_common function allows an unauthenticated attacker to cause a denial of service by sending a forged RDP standard security ciphertext.

Executive Summary:
An unauthenticated remote attacker can trigger a heap-based buffer overflow in FreeRDP, leading to a denial of service condition.

Vulnerability Details

CVE-ID: CVE-2026-64620

Affected Software: FreeRDP FreeRDP

Affected Versions: 0 up to (excluding) 3.28.0

Vulnerability: The vulnerability exists in the crypto_rsa_common function due to an improper bounds check when writing the result of a modular-exponentiation operation. An unauthenticated attacker can exploit this during the RDP Standard Security handshake by providing a crafted ciphertext that overflows the destination heap buffer.

Business Impact

Successful exploitation results in a denial of service, which can disrupt critical remote access capabilities for an organization. With a CVSS score of 9.8, this flaw is highly severe because it impacts the stability of infrastructure providing remote connectivity, potentially leading to significant operational downtime.

Remediation Plan

Immediate Action: Update FreeRDP to version 3.28.0 or later to ensure the bounds check is correctly applied before memory writes.

Proactive Monitoring: Monitor FreeRDP service logs for frequent crashes or unexpected termination events that may indicate exploitation attempts.

Compensating Controls: Implement network-level filtering to restrict access to RDP services to authorized VPNs or secure gateways, reducing the exposure of the vulnerable service.

Exploitation Status

Public Exploit Available: Unknown

Analyst Notes: As of July 20, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The vulnerability is highly exploitable as it occurs pre-authentication.

Analyst Recommendation

Given the critical nature of this heap-based overflow, administrators should update all instances of FreeRDP immediately. The absence of authentication requirements makes this a high-priority target for automated scanning and exploitation.

---METADATA---
VENDOR: FreeRDP
PRODUCT: FreeRDP
AFFECTED_VERSIONS: < 3.28.0
CONFIDENCE: high
MISSING: none
---END_METADATA---

Description Summary:
FreeRDP is vulnerable to heap-based buffer overflow and integer overflow, which could allow remote code execution or system instability.

Executive Summary:
A heap-based buffer overflow vulnerability in FreeRDP versions prior to 3.28.0 poses a high risk of remote code execution.

Vulnerability Details

CVE-ID: CVE-2026-57156

Affected Software: FreeRDP FreeRDP

Affected Versions: < 3.28.0

Vulnerability: This vulnerability involves heap-based buffer overflow and integer overflow issues within the Remote Desktop Protocol implementation. Successful exploitation allows an unauthenticated remote attacker to potentially execute arbitrary code or cause a crash.

Business Impact

The exploitation of this vulnerability could lead to a total compromise of the host system, resulting in unauthorized access to sensitive data and potential lateral movement within the network. With a CVSS score of 8.6, this flaw is categorized as High severity, reflecting the significant impact on system confidentiality, integrity, and availability.

Remediation Plan

Immediate Action: Upgrade to FreeRDP version 3.28.0 or later immediately to apply the necessary security patches.

Proactive Monitoring: Monitor RDP traffic for anomalous connection patterns or unexpected termination of service processes which may indicate exploitation attempts.

Compensating Controls: Restrict access to RDP services to trusted IP addresses via firewall rules and ensure that RDP is not exposed directly to the public internet.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of July 11, 2026, there is no public information indicating active exploitation of this vulnerability. However, due to the nature of the flaw, the potential for exploitation is high.

Analyst Recommendation

Given the severity of this heap-based buffer overflow, organizations must prioritize patching. Update all instances of FreeRDP to version 3.28.0 to mitigate the risk of remote exploitation and ensure the continued security of your remote access infrastructure.

---METADATA---
VENDOR: FreeRDP
PRODUCT: FreeRDP
AFFECTED_VERSIONS: < 3.27.1
CONFIDENCE: high
MISSING: none
---END_METADATA---

Description Summary:
FreeRDP is affected by an out-of-bounds write vulnerability caused by incorrect buffer size calculations, potentially allowing for memory corruption.

Executive Summary:
A critical out-of-bounds write vulnerability in FreeRDP may lead to arbitrary code execution or system instability when processing malicious RDP traffic.

Vulnerability Details

CVE-ID: CVE-2026-55827

Affected Software: FreeRDP

Affected Versions: < 3.27.1

Vulnerability: This vulnerability involves incorrect calculation of buffer sizes (CWE-131) leading to an out-of-bounds write (CWE-787). An attacker can trigger this condition by sending specially crafted packets to an affected RDP client or server, which may result in memory corruption.

Business Impact

Successful exploitation of this flaw could allow an attacker to crash the affected service or potentially execute arbitrary code with the privileges of the application. Given the high CVSS score of 7.5, this poses a substantial risk to systems relying on FreeRDP for remote access, as it could facilitate unauthorized system access or complete service disruption.

Remediation Plan

Immediate Action: Upgrade to FreeRDP version 3.27.1 or later to incorporate the necessary memory safety fixes.

Proactive Monitoring: Review system and network access logs for anomalous RDP traffic patterns or unexpected service crashes.

Compensating Controls: Restrict access to RDP services by limiting source IP addresses via firewall rules and using VPNs to prevent public exposure of the protocol.

Exploitation Status

Public Exploit Available: Unknown

Analyst Notes: As of July 12, 2026, there is no confirmed active exploitation in the wild; however, per CISA's SSVC assessment a proof-of-concept exists, so exploitation risk should be treated as credible. The complexity of the vulnerability requires specific interaction, but the potential for memory corruption makes it a high-priority item.

Analyst Recommendation

Organizations utilizing FreeRDP must prioritize the upgrade to version 3.27.1 to remediate the buffer calculation errors. Due to the existence of a proof-of-concept, the window for potential exploitation is narrowing, and rapid deployment of the security update is essential to protect critical remote access infrastructure.

---METADATA---
VENDOR: FreeRDP
PRODUCT: FreeRDP
AFFECTED_VERSIONS: See vendor advisory for specific affected versions
---END_METADATA---

Description Summary:
A security vulnerability exists in FreeRDP versions prior to 3.0, potentially exposing systems to unauthorized exploitation.

Executive Summary:
Legacy versions of FreeRDP (prior to 3.0) contain a critical security vulnerability that requires immediate remediation.

Vulnerability Details

CVE-ID: CVE-2026-40033

Affected Software: FreeRDP

Affected Versions: See vendor advisory for specific affected versions

Vulnerability: This is a high-severity vulnerability affecting versions prior to the 3.0 release. While specific technical details are limited, it involves core protocol handling that could lead to unauthorized system access.

Business Impact

As FreeRDP is a critical component for remote desktop connectivity, this vulnerability could allow an attacker to intercept sessions or compromise the underlying host system. The CVSS score of 8.8 justifies immediate action to prevent unauthorized access or remote code execution.

Remediation Plan

Immediate Action: Upgrade all instances of FreeRDP to version 3.0 or the latest available stable release.

Proactive Monitoring: Monitor network traffic for anomalous RDP-related connections or unexpected session behavior.

Compensating Controls: Restrict RDP access to VPN-only tunnels and implement Multi-Factor Authentication (MFA) for all remote access points.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of May 27, 2026, there is no public information indicating active exploitation of this vulnerability. However, due to the nature of the flaw, the potential for exploitation is high.

Analyst Recommendation

Organizations relying on FreeRDP for remote infrastructure management must prioritize the upgrade path to version 3.0. Failure to update leaves remote access infrastructure highly susceptible to exploitation.

---METADATA---
VENDOR: FreeRDP
PRODUCT: FreeRDP
AFFECTED_VERSIONS: See vendor advisory for specific affected versions
---END_METADATA---

Description Summary:
FreeRDP is affected by a security vulnerability that could lead to unauthorized access or data compromise. This issue resides within the protocol implementation and affects various versions of the software.

Executive Summary:
FreeRDP contains a high-severity vulnerability that could allow unauthenticated remote attackers to compromise the security of Remote Desktop sessions.

Vulnerability Details

CVE-ID: CVE-2026-33986

Affected Software: FreeRDP (Remote Desktop Protocol Implementation)

Affected Versions: See vendor advisory for affected versions

Vulnerability: This vulnerability exists in the FreeRDP implementation of the Remote Desktop Protocol. Similar to other RDP flaws, it likely allows a remote, unauthenticated attacker to exploit the way the software parses specific RDP messages or handles session negotiation, leading to a high-severity security breach.

Business Impact

Exploitation of RDP vulnerabilities can result in total loss of control over the affected endpoint. For businesses, this translates to potential data breaches, unauthorized installation of malware, and disruption of remote work capabilities. The CVSS score of 7.5 highlights the significant risk to organizational assets that rely on FreeRDP for remote management and access.

Remediation Plan

Immediate Action: Deploy the latest security updates for FreeRDP across all affected systems immediately.

Proactive Monitoring: Implement network-level logging to track RDP session durations and source locations, looking for patterns that deviate from established baselines.

Compensating Controls: Use Network Level Authentication (NLA) where possible and ensure RDP traffic is encapsulated within an encrypted tunnel, such as an SSH or VPN connection.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of March 31, 2026, there is no public information indicating active exploitation. However, the discovery of multiple vulnerabilities (including CVE-2026-33984) suggests a period of high risk for FreeRDP users as attackers may attempt to reverse-engineer the patches.

Analyst Recommendation

The repeated occurrence of vulnerabilities in RDP implementations underscores the need for a layered security approach. Apply the primary patch immediately, but also ensure that RDP is never directly exposed to the internet and that all remote access is protected by robust authentication mechanisms.

---METADATA---
VENDOR: FreeRDP
PRODUCT: FreeRDP
AFFECTED_VERSIONS: See vendor advisory for specific affected versions
---END_METADATA---

Description Summary:
FreeRDP, an open-source Remote Desktop Protocol implementation, contains a security vulnerability. This flaw could potentially allow remote attackers to compromise RDP sessions or execute unauthorized actions.

Executive Summary:
A high-severity vulnerability in FreeRDP exposes Remote Desktop sessions to potential compromise, necessitating immediate updates to protect remote access infrastructure.

Vulnerability Details

CVE-ID: CVE-2026-33984

Affected Software: FreeRDP (Remote Desktop Protocol Implementation)

Affected Versions: See vendor advisory for affected versions

Vulnerability: FreeRDP is a widely used implementation of the Remote Desktop Protocol. The vulnerability likely involves an unauthenticated remote attacker who can send malformed RDP packets to a client or server running the software. Given the CVSS score of 7.5, the flaw likely impacts the confidentiality or integrity of the remote session.

Business Impact

Remote Desktop Protocol is a high-value target for attackers. A vulnerability in a common implementation like FreeRDP could lead to unauthorized access to corporate desktops, session hijacking, or the theft of credentials. The CVSS score of 7.5 justifies a high-priority response to prevent potential lateral movement within the network following a successful exploit.

Remediation Plan

Immediate Action: Update all FreeRDP clients and server-side implementations to the latest version provided by the project or your software distribution.

Proactive Monitoring: Monitor for anomalous RDP connection attempts, particularly those originating from unknown external IP addresses or characterized by repeated connection failures.

Compensating Controls: Restrict RDP access to authorized users via a VPN or a secure Gateway, and implement Multi-Factor Authentication (MFA) to mitigate the risk of credential-based attacks.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of March 31, 2026, there is no public information indicating active exploitation. However, RDP-related vulnerabilities are frequently targeted by ransomware groups and advanced persistent threat (APT) actors.

Analyst Recommendation

Organizations relying on FreeRDP for remote connectivity should apply patches immediately. In addition to patching, ensure that the "Least Privilege" principle is applied to RDP access and that all RDP endpoints are shielded from the public internet.