Medium severity · published Jan 14, 2026
CVE-2026-22851
FreeRDP RDPGFX ResetGraphics race leads to use-after-free in SDL client (sdl->primary)
5.9
CVSS
0.3%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 22% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FR
FreeRDP · FreeRDP
< 3.20.1 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-22851
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-22851
Release Notes
https://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1
Exploit
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-8g87-6pvc-wh99
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