MEDIUM 6.0 NVD
CVE-2026-109251
FreeRDP before 3.32.0 stores the server-supplied signed MS-RDPEGT geometry origin unchecked in an unsigned video surface coordinate, so the blit clamp in gdiVid
FreeRDP before 3.32.0 stores the server-supplied signed MS-RDPEGT geometry origin unchecked in an unsigned video surface coordinate, so the blit clamp in gdiVideoShowSurface() wraps in 32-bit arithmetic and is skipped. A malicious RDP server can send a negative topLevelLeft to clients connecting with /video, causing an out-of-bounds write of decoded H.264 picture data or a client abort.
References
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-grvc-qhhp-7h6m
- https://www.vulncheck.com/advisories/freerdp-before-3.32.0-out-of-bounds-write-via-ms-rdpe
This medium severity vulnerability with a CVSS score of 6.0 was published on 2026-10-12 via NVD.
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