Security Advisory

CVE-2026-25954

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2026-02-25 20:30:32

Last updated 2026-02-26 15:54:47

Assigner GitHub_M

State PUBLISHED

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, `xf_rail_server_local_move_size` dereferences a freed `xfAppWindow` pointer because `xf_rail_get_window` returns an unprotected pointer from the `railWindows` hash table, and the main thread can concurrently delete the window (via a window delete order) while the RAIL channel thread is still using the pointer. Version 3.23.0 fixes the issue.

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