CVE-2026-109251
Medium · 5.3CVSS
5.3
EPSS
0.3%
Published
Oct 12, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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