CVE-2026-22851

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a race condition between the RDPGFX dynamic virtual channel thread and the SDL render thread leads to a heap use-after-free. Specifically, an escaped pointer to sdl->primary (SDL_Surface) is accessed after it has been freed during RDPGFX ResetGraphics handling. This vulnerability is fixed in 3.20.1.

CVSS

No CVSS.

References

Link	Resource
https://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-8g87-6pvc-wh99

Configurations

No configuration.

History

14 Jan 2026, 18:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-01-14 18:16

Updated : 2026-01-14 18:16

NVD link : CVE-2026-22851

Mitre link : CVE-2026-22851

CVE.ORG link : CVE-2026-22851

JSON object : View

Products Affected

No product.

CWE

CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CWE-416

Use After Free

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