CVE-2026-40254 — Path Traversal
CVE-2026-40254 — 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 com
What This Means For You
- If your environment is affected by CWE-193, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-40254 updates and patches.
Related ATT&CK Techniques
🛡️ Detection Rules
2 rules · 6 SIEM formats2 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
FreeRDP Drive Redirection Path Traversal Attempt — CVE-2026-40254
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-40254 | vulnerability | CVE-2026-40254 |
| CWE-193 | weakness | CWE-193 |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | April 24, 2026 at 06:16 UTC |
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