CVE-2026-109251
FreeRDP before 3.32.0 Out-of-Bounds Write via MS-RDPEGT Video Geometry
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-129 |
| Vendor | freerdp |
| Product | freerdp |
| Published | Oct 12, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
FreeRDP / FreeRDP
0 < 3.32.0
References
Credits
🔍 DavidKorczynski