CVE-2026-109251 — Vulnerability intelligence
freerdp — freerdp
Published:
- CVSS
- 6
- CISA KEV
- Not listed; not proof of no exploitation
Original source text (not a translation)
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.