CVE-2026-24676
Analyzed Analyzed - Analysis Complete
Use-After-Free in FreeRDP AUDIN Format Causes Potential Crash

Publication date: 2026-02-09

Last updated on: 2026-02-10

Assigner: GitHub, Inc.

Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.22.0, AUDIN format renegotiation frees the active format list while the capture thread continues using audin->format, leading to a use after free in audio_format_compatible. This vulnerability is fixed in 3.22.0.
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Meta Information
Published
2026-02-09
Last Modified
2026-02-10
Generated
2026-06-16
AI Q&A
2026-02-09
EPSS Evaluated
2026-06-15
NVD
CVE-2026-24676
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
freerdp freerdp to 3.22.0 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-416 The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
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Executive Summary

This vulnerability exists in FreeRDP, a free implementation of the Remote Desktop Protocol. Before version 3.22.0, there was an issue with AUDIN format renegotiation where the active format list was freed while the capture thread was still using it. This caused a use-after-free condition in the function audio_format_compatible.

A use-after-free vulnerability occurs when a program continues to use memory after it has been freed, which can lead to crashes or potentially allow an attacker to execute arbitrary code.

This issue was fixed in FreeRDP version 3.22.0.

Impact Analysis

The use-after-free vulnerability in FreeRDP can lead to serious security impacts such as application crashes or potentially arbitrary code execution by an attacker.

Since FreeRDP is used for remote desktop connections, exploitation of this vulnerability could allow an attacker to compromise the system running the vulnerable version, leading to unauthorized access or control.

Compliance Impact

I don't know

Detection Guidance

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Mitigation Strategies

To mitigate this vulnerability, you should upgrade FreeRDP to version 3.22.0 or later, where the issue has been fixed.

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