CVE-2026-40033
High · 8.8CVSS
8.8
EPSS
1.1%
Published
May 26, 2026
CISA due date
—
The record
FreeRDP before 3.26.0 contains a heap-buffer-overflow vulnerability in gdi_CacheToSurface that allows remote attackers to write out-of-bounds heap memory. The vulnerability occurs because rectangle validation clamps coordinates to UINT16_MAX but performs copy operations using unclamped cache entry dimensions, enabling malicious RDP servers to trigger large out-of-bounds writes and potentially achieve remote code execution or client crash.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| openSUSE:Leap 16.0 | freerdp | 0 | 3.26.0-160000.1.1 |
| openSUSE:Tumbleweed | freerdp | 0 | 3.26.0-3.1 |
Related vulnerabilities
- CVE-2026-45700 FreeRDP is a free implementation of the Remote Desktop Protocol. Also affects freerdp
- CVE-2026-44420 FreeRDP is a free implementation of the Remote Desktop Protocol. Also affects freerdp
- CVE-2026-44422 FreeRDP is a free implementation of the Remote Desktop Protocol. Also affects freerdp
- CVE-2026-44421 FreeRDP is a free implementation of the Remote Desktop Protocol. Also affects freerdp
- CVE-2026-40254 FreeRDP is a free implementation of the Remote Desktop Protocol. Also affects freerdp
- CVE-2026-33995 FreeRDP is a free implementation of the Remote Desktop Protocol. Also affects freerdp
- CVE-2026-33987 FreeRDP is a free implementation of the Remote Desktop Protocol. Also affects freerdp
- CVE-2026-33986 FreeRDP is a free implementation of the Remote Desktop Protocol. Also affects freerdp