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.
CVSS Details
- CVSS 3.1 Base Score: 4.2
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade freerdp-serverUpgrade freerdp-libsUpgrade freerdp-debuginfoUpgrade libwinpr-debuginfoUpgrade libwinprUpgrade libwinpr-develUpgrade freerdp-libs-debuginfoUpgrade freerdp-debugsourceUpgrade freerdp-server-debuginfoUpgrade freerdpUpgrade freerdp-devel | May 19, 2026 | Apr 24, 2026 |
| Debian | — | Upgrade freerdp3 | Jul 23, 2026 | Jul 23, 2026 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Apr 24, 2026 |
| Ubuntu | — | Upgrade libfreerdp3-3Upgrade freerdp3-x11Upgrade freerdp-x11 | Jul 21, 2026 | Jul 20, 2026 |
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