FreeRDP is a free implementation of the Remote Desktop Protocol. A heap use-after-free vulnerability occurs in the function irp_thread_func, where the IRP is freed by irp->Complete() and then accessed again on the error path. This vulnerability impacts versions prior to 3.20.1 and is fixed in that version.
The CVSS score for this vulnerability is 6.8, indicating a medium severity level. This score suggests that while the vulnerability poses a risk, it may require specific conditions for exploitation, such as network access and user interaction.
Organizations using affected versions of FreeRDP should prioritize remediation to mitigate potential risks associated with this vulnerability. Risk to organizations includes unauthorized access, data manipulation, and service disruptions.
As of now, there are no known exploits or public proofs of concept for this vulnerability. However, given its medium severity, organizations should remain vigilant and apply the necessary updates promptly.
Vulnerability Details
The vulnerability is classified under CWE-416, which pertains to use-after-free errors. This type of vulnerability can lead to various impacts including confidentiality, integrity, and availability concerns, as evidenced by its high impact ratings.
The affected product is FreeRDP, specifically versions prior to 3.20.1. The vulnerability was published on January 14, 2026, and is associated with a CVSS v3.1 score of 9.8, classifying it as critical, but the adjusted score for specific scenarios is 6.8.
Technical Analysis
The root cause of the vulnerability lies in the incorrect handling of memory management within the FreeRDP codebase. Specifically, the IRP is freed too early, leading to potential misuse later in the execution flow.
The attack vector for this vulnerability is network-based, with high attack complexity and no required privileges for exploitation. User interaction is minimal, making this vulnerability particularly concerning in a networked environment. The impacts on confidentiality, integrity, and availability are rated as high, highlighting the potential risks of exploitation.
Risk & Impact Analysis
The deployment of FreeRDP in environments that expose it to the network can lead to significant risks, particularly for organizations relying on remote access solutions. If exploited, this vulnerability could allow attackers to gain unauthorized access to sensitive systems.
Given the nature of the vulnerability, organizations must act promptly. Organizations should address this vulnerability in their patch cycle to prevent potential breaches and maintain the integrity of their systems.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions of FreeRDP are all versions prior to 3.20.1. Organizations should ensure they are running the latest version to mitigate this vulnerability.
Mitigation & Remediation
To remediate this vulnerability, organizations should upgrade FreeRDP to version 3.20.1 or later. If immediate upgrading is not possible, consider implementing workarounds such as restricting network access to FreeRDP services and monitoring for anomalous behaviors.
For comprehensive security, organizations should also consider conducting regular security assessments. Organizations can validate their defenses through application security assessments to identify similar weaknesses.
Detection Guidance
Monitoring logs for any unusual access patterns, especially related to FreeRDP, is critical. Organizations should keep an eye out for any signs of exploitation attempts and review access logs for anomalies.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability lies in its potential to affect remote access solutions widely used in many organizations. Monitoring for such vulnerabilities should be part of a broader security strategy.
It highlights the importance of maintaining updated systems and conducting regular vulnerability assessments. Organizations should implement a proactive approach to security, including vulnerability management programs to stay ahead of potential threats.
The trend of vulnerabilities affecting remote desktop protocols signifies a need for heightened security measures in remote access technologies. Organizations should ensure they are equipped to detect and respond to such vulnerabilities swiftly.
For more insights on security best practices, organizations can refer to resources on penetration testing methodology and other relevant topics.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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