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CVE-2026-40254

CVE-kwetsbaarheidsdetails - eXtreme Datacenter Security Operations

Gepubliceerd 2026-04-24 02:24:50

Laatst bijgewerkt 2026-04-24 12:06:22

Toegewezen door GitHub_M

CVSS-score 4.2

Status PUBLISHED

Beschrijving

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.

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