Description Summary:
Netatalk contains an integer underflow vulnerability in its file server suite that can be exploited by authenticated users to achieve arbitrary code execution or cause service crashes.

Executive Summary:
An integer underflow flaw in Netatalk allows authenticated attackers to potentially compromise the integrity and availability of the file server.

Vulnerability Details

CVE-ID: CVE-2026-45699

Affected Software: Netatalk Netatalk

Affected Versions: >= 3.1.19, < 4.4.3

Vulnerability: The vulnerability is an integer underflow (CWE-191) occurring within the Netatalk file server suite. It requires the attacker to have authenticated access to the system, at which point they can trigger memory corruption that may lead to unauthorized data access or system instability.

Business Impact

With a CVSS score of 7.5, this vulnerability represents a high risk to organizational data security. Because it allows for potential system compromise, it threatens the confidentiality, integrity, and availability of sensitive files stored on the server.

Remediation Plan

Immediate Action: Update Netatalk to version 4.4.3 or later, which contains the necessary fix for the integer underflow issue.

Proactive Monitoring: Review authentication logs for unusual activity or repeated failed login attempts that might precede an exploitation attempt.

Compensating Controls: Restrict network access to the Netatalk service to trusted IP ranges only, effectively reducing the pool of potential attackers who could leverage this authenticated vulnerability.

Exploitation Status

Public Exploit Available: Unknown

Analyst Notes: As of August 16, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The requirement for authenticated access significantly raises the barrier for entry compared to unauthenticated network attacks.

Analyst Recommendation

Organizations utilizing Netatalk should verify their current version and apply the 4.4.3 patch as part of their standard maintenance cycle. Limiting access to the service to authorized users remains a critical defense-in-depth strategy for this platform.

Description Summary:
Netatalk is affected by an integer underflow vulnerability in its file server suite, which could potentially be leveraged to compromise the confidentiality, integrity, and availability of the system.

Executive Summary:
An integer underflow vulnerability in Netatalk, a widely used file server suite, exposes systems to potential compromise if an authenticated attacker provides specifically crafted input.

Vulnerability Details

CVE-ID: CVE-2026-45698

Affected Software: Netatalk

Affected Versions: >= 3.1.19, < 4.4.3

Vulnerability: The issue is an Integer Underflow (CWE-191) which occurs during packet processing. Successful exploitation requires an authenticated attacker to provide malicious input that triggers the underflow, potentially leading to memory corruption or further malicious actions.

Business Impact

This vulnerability poses a significant risk to the integrity and availability of file server operations. With a CVSS score of 7.5, the potential for total impact on confidentiality, integrity, and availability makes this a critical concern for environments relying on Netatalk for file sharing, as it could result in system instability or unauthorized data access.

Remediation Plan

Immediate Action: Update Netatalk to version 4.4.3 or newer, where the integer underflow has been resolved via the upstream fix.

Proactive Monitoring: Monitor for service crashes or abnormal process behavior in the Netatalk daemon that may suggest memory corruption attempts.

Compensating Controls: Restrict access to the Netatalk service to trusted networks or specific authorized users only to reduce the attack surface.

Exploitation Status

Public Exploit Available: Unknown.

Analyst Notes: As of August 18, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The requirement for authentication significantly lowers the immediate attack surface for external threats.

Analyst Recommendation

While authentication is required for exploitation, the severity of this flaw warrants prompt attention. Administrators should manage the update to version 4.4.3 as part of their standard patch management cycle to eliminate the risk of memory corruption-based attacks.

Description Summary:
Netatalk 2 is susceptible to a path traversal vulnerability that allows authenticated attackers to access restricted directories via improper pathname validation.

Executive Summary:
A path traversal vulnerability in Netatalk 2 allows authenticated attackers to access unauthorized files, posing a significant risk to system integrity.

Vulnerability Details

CVE-ID: CVE-2026-44068

Affected Software: Netatalk Netatalk

Affected Versions: 2.1.0 through 4.4.2

Vulnerability: This vulnerability is a path traversal flaw (CWE-22) residing in the file handling mechanisms of Netatalk 2. It requires an attacker to have authenticated access to the system to successfully traverse outside of restricted directories.

Business Impact

Successful exploitation allows an attacker to bypass file system restrictions, potentially leading to unauthorized data disclosure or modification. With a CVSS score of 7.6, this represents a high severity risk that could lead to full system compromise if sensitive configuration or data files are accessed.

Remediation Plan

Immediate Action: Update Netatalk to version 4.4.3 or later to apply the necessary security patches.

Proactive Monitoring: Monitor system access logs for unusual path patterns or attempts to access directories outside of expected user shares.

Compensating Controls: Ensure strict file system permissions are enforced for the service account running Netatalk to limit the impact of potential traversals.

Exploitation Status

Public Exploit Available: No — there is no confirmed public exploit in the available data.

Analyst Notes: As of May 21, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The flaw is limited to authenticated users, which necessitates robust identity and access management as a baseline defense.

Analyst Recommendation

Given the high CVSS score and the potential for unauthorized file access, organizations running Netatalk 2 should prioritize updating to version 4.4.3. Patching is the only definitive way to resolve this path traversal flaw and protect sensitive file system resources.

Description Summary:
Multiple heap out-of-bounds reads exist in the Spotlight RPC unmarshalling code in Netatalk 3, potentially allowing information disclosure.

Executive Summary:
A heap out-of-bounds read vulnerability in Netatalk 3 allows authenticated attackers to potentially access sensitive memory.

Vulnerability Details

CVE-ID: CVE-2026-44066

Affected Software: Netatalk Netatalk

Affected Versions: 3.1.0 through 4.4.2

Vulnerability: The vulnerability is an out-of-bounds read (CWE-125) within the Spotlight RPC unmarshalling code. Based on the CVSS vector (PR:L), this requires a low-privilege authenticated user to successfully trigger the flaw.

Business Impact

Successful exploitation of this vulnerability could lead to the exposure of sensitive information residing in memory. While the CVSS score of 7.1 (High) reflects the potential for information disclosure and service impact, the requirement for authenticated access reduces the immediate risk to external-facing environments.

Remediation Plan

Immediate Action: Update Netatalk to version 4.4.3 or later, where this vulnerability has been addressed.

Proactive Monitoring: Review system and application logs for unusual RPC traffic or unexpected process crashes that may indicate exploitation attempts.

Compensating Controls: Restrict access to Netatalk services to trusted users only and ensure network segmentation is in place to limit the reach of potential attackers.

Exploitation Status

Public Exploit Available: No (unknown).

Analyst Notes: As of May 22, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The flaw's complexity requires specific interaction with the Spotlight RPC interface.

Analyst Recommendation

Given the severity of this memory-handling flaw, administrators should prioritize updating to the patched version, 4.4.3. Ensuring that all Netatalk instances are running the latest software version is the most effective way to mitigate this risk.

Description Summary:
An out-of-bounds read vulnerability exists in the ASP session ID handling logic of Netatalk 1, potentially leading to service disruption or information disclosure.

Executive Summary:
An out-of-bounds read vulnerability in Netatalk 1 session handling poses a risk of service interruption and information disclosure to adjacent network attackers.

Vulnerability Details

CVE-ID: CVE-2026-44064

Affected Software: Netatalk Netatalk

Affected Versions: 1.3 through 4.4.2

Vulnerability: This is an out-of-bounds read (CWE-125) triggered during the handling of ASP session IDs. The CVSS vector (AV:A) indicates that the attacker must be positioned on the adjacent network to exploit this flaw.

Business Impact

The vulnerability carries a CVSS score of 7.1 (High), primarily due to its potential to cause a denial-of-service condition (impacting availability) or unauthorized information exposure. Organizations relying on Netatalk for file sharing services may face operational downtime if the service is crashed via this vector.

Remediation Plan

Immediate Action: Update the Netatalk installation to version 4.4.3 or later to resolve the session handling flaw.

Proactive Monitoring: Monitor network-level traffic for anomalous packets directed at the Netatalk service, specifically targeting session ID parameters.

Compensating Controls: Implement network access controls to ensure only authorized devices can communicate with the Netatalk service, mitigating the adjacent network attack vector.

Exploitation Status

Public Exploit Available: No (unknown).

Analyst Notes: As of May 22, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The requirement for adjacent network access limits the attack surface significantly.

Analyst Recommendation

The vulnerability necessitates a patch to the latest version (4.4.3) to ensure service stability and security. Administrators should schedule these updates during the next maintenance window to minimize potential exposure.

Description Summary:
A missing output length bounds check in the pull_charset_flags() function of Netatalk 2 allows for a potential out-of-bounds write.

Executive Summary:
A critical out-of-bounds write vulnerability in Netatalk 2 could allow remote, authenticated attackers to achieve arbitrary code execution or system compromise.

Vulnerability Details

CVE-ID: CVE-2026-44062

Affected Software: Netatalk Netatalk

Affected Versions: 2.0.4 through 4.4.2

Vulnerability: This is an out-of-bounds write (CWE-787) caused by a missing length check in the pull_charset_flags() function. The CVSS vector indicates that while it requires authenticated access (PR:L), it carries a high impact on Confidentiality, Integrity, and Availability.

Business Impact

With a CVSS score of 7.5 (High), this vulnerability is highly dangerous as it can lead to full system compromise. Successful exploitation could allow an attacker to gain elevated control, potentially leading to unauthorized data modification, theft, or complete service takeover.

Remediation Plan

Immediate Action: Upgrade to Netatalk version 4.4.3 or higher immediately to apply the necessary bounds checking logic.

Proactive Monitoring: Audit access logs for unusual user activity and monitor system integrity for unauthorized changes or unexpected process behavior.

Compensating Controls: Employ a Web Application Firewall or intrusion detection system configured to inspect traffic for malformed character set flag parameters.

Exploitation Status

Public Exploit Available: No (unknown).

Analyst Notes: As of May 22, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. Memory corruption flaws of this nature are often highly sought after by threat actors for weaponization.

Analyst Recommendation

Given the potential for total system compromise, this CVE should be treated with high urgency. Organizations must prioritize the update to version 4.4.3 to ensure that the memory-safety defect in character set flag processing is remediated.

Description Summary:
An integer underflow vulnerability in the dsi_writeinit() function of Netatalk allows for potential service disruption.

Executive Summary:
A critical integer underflow vulnerability in Netatalk versions 1.5.0 through 4.4.2 poses a significant risk of denial-of-service to affected network file systems.

Vulnerability Details

CVE-ID: CVE-2026-44060

Affected Software: Netatalk

Affected Versions: 1.5.0 through 4.4.2

Vulnerability: This vulnerability is an integer underflow (CWE-191) occurring within the dsi_writeinit() function. The flaw is remotely exploitable by an unauthenticated attacker, as indicated by the CVSS vector AV:N/AC:L/PR:N.

Business Impact

The primary impact of this vulnerability is a high risk of system availability loss. Because the flaw allows for an integer underflow, an attacker can trigger a crash, leading to service downtime for file-sharing infrastructure. While the CVSS score is 7.5 (High), the ability for unauthenticated remote attackers to disrupt business-critical file services necessitates prompt remediation to maintain operational continuity.

Remediation Plan

Immediate Action: Update Netatalk to version 4.4.3 or later to apply the necessary fix for the dsi_writeinit() integer underflow.

Proactive Monitoring: Monitor system logs for abnormal service crashes or repeated connection attempts targeting the DSI (Data Stream Interface) protocol.

Compensating Controls: Implement network segmentation to restrict access to Netatalk services to only trusted internal IP ranges, reducing the exposure to external attackers.

Exploitation Status

Public Exploit Available: Unknown

Analyst Notes: As of May 22, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The flaw is inherently exploitable due to the lack of required authentication, but currently, no known weaponized exploit exists.

Analyst Recommendation

Given the ease of exploitation (low complexity, no authentication), organizations should prioritize patching their Netatalk instances. Upgrading to version 4.4.3 is the only definitive way to eliminate the risk of service disruption associated with this vulnerability.

Description Summary:
An authentication bypass vulnerability in Netatalk versions 2.2.2 through 4.4.2 allows attackers with high privileges to compromise system integrity and availability.

Executive Summary:
An authentication bypass vulnerability in Netatalk 2.2.2 through 4.4.2 could allow an attacker with high privileges to achieve full system compromise.

Vulnerability Details

CVE-ID: CVE-2026-44058

Affected Software: Netatalk

Affected Versions: 2.2.2 through 4.4.2

Vulnerability: This is an improper authentication vulnerability (CWE-287) that requires high privileges (PR:H) to exploit. An attacker who has already gained high-level access may leverage this flaw to bypass further authentication controls, leading to total impact on confidentiality, integrity, and availability.

Business Impact

Successful exploitation of this flaw could result in complete administrative control over the affected Netatalk server. Given the CVSS score of 7.2, the risk of unauthorized data access and system manipulation is severe. Organizations relying on Netatalk for sensitive file storage face significant reputational and operational risks if this vulnerability is leveraged by an existing malicious actor within the environment.

Remediation Plan

Immediate Action: Update Netatalk to version 4.5.0 or later to resolve the authentication bypass mechanism.

Proactive Monitoring: Review audit logs for unauthorized configuration changes or anomalous access patterns from existing high-privilege service accounts.

Compensating Controls: Apply the principle of least privilege to administrative accounts and ensure that management interfaces for Netatalk are not exposed to the public internet.

Exploitation Status

Public Exploit Available: Unknown

Analyst Notes: As of May 22, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. While the impact is high, the requirement for high privileges mitigates the immediate risk from external, unauthenticated threats.

Analyst Recommendation

While the requirement for high privileges reduces the attack surface compared to unauthenticated flaws, the potential for total system compromise makes this a high-priority item for maintenance cycles. Administrators should move to version 4.5.0 as soon as possible.

Description Summary:
A logic error involving bitwise OR operations in Netatalk 3.1.4 through 4.4.2 can lead to OS command injection if successfully exploited.

Executive Summary:
A logic error in Netatalk 3.1.4 through 4.4.2 enables potential OS command injection, posing a severe threat to server security.

Vulnerability Details

CVE-ID: CVE-2026-44055

Affected Software: Netatalk

Affected Versions: 3.1.4 through 4.4.2

Vulnerability: This is an OS command injection vulnerability (CWE-78) triggered by a logic error involving bitwise OR operations. The attack vector requires low privileges (PR:L) and high attack complexity (AC:H), but successful execution allows for full system compromise.

Business Impact

Command injection vulnerabilities are among the most dangerous, as they allow an attacker to execute arbitrary code on the underlying host operating system. With a CVSS score of 7.5, the potential for total system takeover is high. If exploited, an attacker could exfiltrate sensitive files, install persistent backdoors, or pivot to other systems within the internal network.

Remediation Plan

Immediate Action: Update Netatalk to version 4.4.3 or later to patch the logic error that enables command injection.

Proactive Monitoring: Monitor for suspicious child processes being spawned by the Netatalk daemon and inspect system logs for unusual command-line arguments.

Compensating Controls: Use a Web Application Firewall (WAF) or host-based Intrusion Detection System (IDS) to detect and block common command injection signatures in network traffic.

Exploitation Status

Public Exploit Available: Unknown

Analyst Notes: As of May 22, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The high attack complexity required for successful execution serves as a temporary barrier, but it should not be relied upon as a primary defense.

Analyst Recommendation

Due to the critical nature of OS command injection, this vulnerability should be remediated with high urgency. Administrators must update to version 4.4.3 to ensure that the logic error is neutralized and the command injection vector is closed.

Description Summary:
Netatalk is vulnerable to an improper cryptographic algorithm usage, potentially allowing unauthorized access to sensitive communications.

Executive Summary:
A vulnerability in Netatalk versions 1.5.0 through 4.2.2 involving the use of broken or risky cryptographic algorithms poses a significant risk of unauthorized data interception.

Vulnerability Details

CVE-ID: CVE-2026-44053

Affected Software: Netatalk Netatalk

Affected Versions: 1.5.0 through 4.2.2

Vulnerability: This vulnerability (CWE-327) involves the use of weak or broken cryptographic algorithms, which can be exploited by an unauthenticated remote attacker to compromise data confidentiality and integrity.

Business Impact

The reliance on insecure cryptography can lead to the exposure of sensitive data transmitted over the network, potentially resulting in unauthorized access or data breaches. With a CVSS score of 7.4, this vulnerability represents a high risk to business operations, particularly in environments where network traffic contains confidential information.

Remediation Plan

Immediate Action: Upgrade to Netatalk version 4.5.0 or later to ensure the implementation of secure cryptographic standards.

Proactive Monitoring: Review network traffic logs for anomalous patterns and monitor authentication logs for signs of unauthorized access attempts.

Compensating Controls: Implement robust network-level encryption (e.g., VPNs or TLS-based tunneling) to encapsulate traffic if immediate patching is not feasible.

Exploitation Status

Public Exploit Available: No

Analyst Notes: As of May 22, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The flaw is inherent to the cryptographic implementation, making it susceptible to passive interception attacks.

Analyst Recommendation

Given the potential for complete compromise of data confidentiality and integrity, organizations should prioritize upgrading to the patched version of Netatalk. Immediate remediation is necessary to eliminate the risk of cryptographic exploitation.

Description Summary:
Netatalk is susceptible to sensitive information exposure due to the improper insertion of restricted data into application log files.

Executive Summary:
An information disclosure vulnerability in Netatalk versions 2.1.0 through 4.4.2 allows unauthorized access to sensitive data via insecure logging practices.

Vulnerability Details

CVE-ID: CVE-2026-44052

Affected Software: Netatalk Netatalk

Affected Versions: 2.1.0 through 4.4.2

Vulnerability: This vulnerability (CWE-532) occurs when an application inadvertently writes sensitive information, such as credentials or session tokens, into log files that may be accessible to unauthorized users.

Business Impact

The leakage of sensitive information into logs can lead to unauthorized access to systems or accounts, resulting in broader security compromises. With a CVSS score of 7.5, this issue presents a high risk, as it allows unauthenticated attackers to potentially gather intelligence required for further exploitation.

Remediation Plan

Immediate Action: Update Netatalk to version 4.4.3 or later to remediate the insecure logging behavior.

Proactive Monitoring: Audit existing application logs for the presence of sensitive data and restrict access to log directories to authorized personnel only.

Compensating Controls: Use a Web Application Firewall (WAF) or system-level monitoring to detect and block access attempts targeting sensitive files or log storage paths.

Exploitation Status

Public Exploit Available: No

Analyst Notes: As of May 22, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The vulnerability is highly automatable, increasing the risk of discovery by automated scanning tools.

Analyst Recommendation

Organizations should ensure that logging configurations are audited and that the software is updated to the latest version immediately. Securing log files is a critical step in preventing secondary attacks and maintaining overall system integrity.

Description Summary:
Netatalk 3 contains an improper link resolution vulnerability that allows authenticated attackers to perform unauthorized file access via symbolic link following.

Executive Summary:
An improper link resolution vulnerability in Netatalk 3 allows authenticated attackers to manipulate file access, resulting in a high risk of sensitive data exposure.

Vulnerability Details

CVE-ID: CVE-2026-44051

Affected Software: Netatalk Netatalk

Affected Versions: 3.0.2 through 4.4.2

Vulnerability: This vulnerability (CWE-59) occurs when the application fails to properly resolve links before performing file operations. It allows an authenticated attacker to bypass intended file access restrictions.

Business Impact

The ability to exploit link resolution can lead to unauthorized access to sensitive files on the server, resulting in potential data breaches. With a CVSS score of 8.1, the vulnerability is classified as high, reflecting the potential for significant impact on data confidentiality and integrity.

Remediation Plan

Immediate Action: Upgrade to Netatalk version 4.4.3 or later to remediate the vulnerability.

Proactive Monitoring: Audit file system activity logs for suspicious access patterns involving symbolic or hard links.

Compensating Controls: Configure the environment to prevent the creation of symbolic links in directories accessible to the Netatalk service where possible.

Exploitation Status

Public Exploit Available: No — there is no confirmed public exploit in the available data.

Analyst Notes: As of May 21, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The vulnerability requires authenticated access, emphasizing the importance of securing user credentials and access levels.

Analyst Recommendation

Organizations should treat this high-severity vulnerability with urgency. Immediate application of the 4.4.3 update is required to close the link resolution flaw and maintain the security posture of the affected Netatalk environments.

Description Summary:
Netatalk contains a heap-based buffer overflow vulnerability within the cnid daemon's comm_rcv() function.

Executive Summary:
A heap buffer overflow in the Netatalk cnid daemon could allow a remote attacker to execute arbitrary code or crash the service.

Vulnerability Details

CVE-ID: CVE-2026-44050

Affected Software: Netatalk

Affected Versions: 2.0.0 through 4.4.2

Vulnerability: This is a heap buffer overflow in the cnid daemon. It occurs during the comm_rcv() process, which can be triggered by an attacker sending malformed data to the service.

Business Impact

A successful exploit may result in arbitrary code execution with the privileges of the Netatalk service, leading to full system compromise or a persistent denial-of-service condition. The 9.9 CVSS score highlights the extreme urgency of this vulnerability for any environment utilizing Netatalk for file sharing.

Remediation Plan

Immediate Action: Upgrade to Netatalk version 4.4.3 or later immediately.

Proactive Monitoring: Monitor system logs for service crashes or unusual memory usage associated with the cnid daemon.

Compensating Controls: Restrict access to the Netatalk service to authorized client IP addresses via firewall rules to minimize the attack surface.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of May 21, 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 potential for remote code execution, organizations should prioritize updating all Netatalk instances to version 4.4.3. This will eliminate the buffer overflow condition and secure the communication interface.

Description Summary:
A critical out-of-bounds write vulnerability exists in the Netatalk convert_charset() function due to improper null termination, leading to potential system compromise.

Executive Summary:
An out-of-bounds write vulnerability in the Netatalk convert_charset() function allows authenticated attackers to potentially execute arbitrary code or cause system crashes.

Vulnerability Details

CVE-ID: CVE-2026-44049

Affected Software: Netatalk Netatalk

Affected Versions: 2.0.4 through 4.4.2

Vulnerability: This memory corruption vulnerability (CWE-787) is triggered by improper null termination in the convert_charset() function, allowing an authenticated attacker to manipulate memory.

Business Impact

Successful exploitation can lead to arbitrary code execution, resulting in full system compromise, data loss, or significant service disruption. With a CVSS score of 7.5, this vulnerability poses a severe threat to the availability and integrity of the affected systems.

Remediation Plan

Immediate Action: Apply the vendor-provided security update by upgrading to Netatalk version 4.4.3 or later.

Proactive Monitoring: Monitor system logs for crashes or unusual memory usage patterns that may indicate attempts to trigger a buffer overflow.

Compensating Controls: Ensure the application is running with the principle of least privilege to minimize the potential impact should an attacker successfully execute code.

Exploitation Status

Public Exploit Available: No

Analyst Notes: As of May 22, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The complexity of the attack vector (requiring authentication) provides a partial barrier to immediate exploitation.

Analyst Recommendation

Given the potential for remote code execution, patching this vulnerability is of high urgency. System administrators should prioritize the update to version 4.4.3 to prevent memory-related exploitation and maintain system security.

Description Summary:
Netatalk 2 is vulnerable to a stack-based buffer overflow that could allow an authenticated attacker to execute arbitrary code or cause a denial of service.

Executive Summary:
A stack-based buffer overflow in Netatalk 2 allows authenticated attackers to potentially execute arbitrary code, representing a critical security risk.

Vulnerability Details

CVE-ID: CVE-2026-44048

Affected Software: Netatalk Netatalk

Affected Versions: 2.0.4 through 4.4.2

Vulnerability: This is a stack-based buffer overflow (CWE-121) occurring in Netatalk 2. An authenticated attacker can trigger this condition through specially crafted network requests, leading to memory corruption.

Business Impact

The vulnerability carries a CVSS score of 8.8, indicating a high risk of remote code execution. Successful exploitation could lead to full system compromise, data theft, or complete service disruption, severely impacting business operations.

Remediation Plan

Immediate Action: Upgrade to Netatalk version 4.4.3 or later to resolve the buffer overflow vulnerability.

Proactive Monitoring: Monitor for service crashes or unusual CPU spikes that may indicate attempts to exploit the memory corruption vulnerability.

Compensating Controls: Use network segmentation and intrusion detection systems (IDS) to identify and block malformed packets directed toward the Netatalk service.

Exploitation Status

Public Exploit Available: No — there is no confirmed public exploit in the available data.

Analyst Notes: As of May 21, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. Given the nature of buffer overflows, this vulnerability is inherently dangerous and represents a high risk for code execution if discovered by malicious actors.

Analyst Recommendation

Due to the potential for remote code execution, this vulnerability demands immediate attention. All systems running Netatalk 2 should be updated to version 4.4.3 or later as soon as possible to mitigate the risk of compromise.

Description Summary:
Netatalk is vulnerable to SQL injection via the cnid backend, allowing authenticated attackers to execute arbitrary SQL commands.

Executive Summary:
A SQL injection vulnerability in Netatalk versions 3.1.0 through 4.4.2 allows authenticated attackers to compromise the underlying database, posing a high risk to data integrity and availability.

Vulnerability Details

CVE-ID: CVE-2026-44047

Affected Software: Netatalk

Affected Versions: 3.1.0 through 4.4.2

Vulnerability: This is a SQL injection vulnerability (CWE-89) within the cnid backend. The vulnerability requires the attacker to have low-level authenticated access to the system to successfully inject malicious SQL commands.

Business Impact

Successful exploitation of this flaw could allow an attacker to bypass security controls, leading to unauthorized data access, modification, or total system compromise. With a CVSS score of 8.8, this represents a significant threat to business continuity and data confidentiality, as the backend database often contains sensitive configuration or user information.

Remediation Plan

Immediate Action: Upgrade to Netatalk version 4.4.3 or later to remediate the vulnerability.

Proactive Monitoring: Review database access logs for unusual queries or patterns indicative of SQL injection attempts, particularly those originating from authenticated user sessions.

Compensating Controls: Ensure that the database user account utilized by the Netatalk cnid backend operates under the principle of least privilege to limit the scope of a potential injection attack.

Exploitation Status

Public Exploit Available: Unknown

Analyst Notes: As of May 21, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. While the CVSS score is high, the requirement for authenticated access slightly lowers the immediate threat compared to unauthenticated remote code execution.

Analyst Recommendation

Given the severity of potential SQL injection, administrators should prioritize updating to the latest version of Netatalk. Apply the patch as part of the next scheduled maintenance cycle or sooner if the environment is exposed to untrusted users.