CVE-2026-40254
Medium · 4.2CVSS
4.2
EPSS
0.2%
Published
Apr 24, 2026
CISA due date
—
The record
FreeRDP is a free implementation of the Remote Desktop Protocol. Versions prior to 3.25.0 have an off-by-one in the path traversal filter in `channels/drive/client/drive_file.c`. The `contains_dotdot()` function catches `../` and `..\` mid-path but misses `..` when it's the last component with no trailing separator. A rogue RDP server can read, list, or write files one directory above the client's shared folder through RDPDR requests. This requires the victim to connect with drive redirection enabled. Version 3.25.0 patches the issue.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| openSUSE:Leap 16.0 | freerdp | 0 | 3.26.0-160000.1.1 |
| openSUSE:Tumbleweed | freerdp | 0 | 3.26.0-1.1 |
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-2026-40033 FreeRDP before 3.26.0 contains a heap-buffer-overflow vulnerability in gdi_CacheToSurface… 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