Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, `xf_Pointer_New` frees `cursorPixels` on failure, then `pointer_free` calls `xf_Pointer_Free` and frees it again, triggering ASan UAF. A malicious server can trigger a client‑side use after free, causing a crash (DoS) and potential heap corruption with code‑execution risk depending on allocator behavior and surrounding heap layout. Version 3.21.0 contains a patch for the issue.
References (5)
Core 5
Core References
Vendor Advisory, Exploit x_refsource_confirm
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-qcrr-85qx-4p6x
Product x_refsource_misc
https://github.com/FreeRDP/FreeRDP/blob/3370e30e92a021eb680892dda14d642bc8b8727c/client/X11/xf_graphics.c#L312-L319
Product x_refsource_misc
https://github.com/FreeRDP/FreeRDP/blob/3370e30e92a021eb680892dda14d642bc8b8727c/client/X11/xf_graphics.c#L340
Product x_refsource_misc
https://github.com/FreeRDP/FreeRDP/blob/3370e30e92a021eb680892dda14d642bc8b8727c/libfreerdp/cache/pointer.c#L164-L174
Release Notes x_refsource_misc
https://github.com/FreeRDP/FreeRDP/releases/tag/3.21.0
Scores
CVSS v3
9.8
EPSS
0.0018
EPSS Percentile
38.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-416
Status
published
Products (1)
freerdp/freerdp
< 3.21.0
Published
Jan 19, 2026
Tracked Since
Feb 18, 2026