CVE-2026-25942

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, `xf_rail_server_execute_result` indexes the global `error_code_names[]` array (7 elements, indices 0–6) with an unchecked `execResult->execResult` value received from the server, allowing an out-of-bounds read when the server sends an `execResult` value of 7 or greater. Version 3.23.0 fixes the issue.

The following products are affected by CVE-2026-25942 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-25942.

URL	Resource
https://github.com/FreeRDP/FreeRDP/blob/3370e30e92a021eb680892dda14d642bc8b8727c/channels/rail/client/rail_orders.c#L528
https://github.com/FreeRDP/FreeRDP/blob/3370e30e92a021eb680892dda14d642bc8b8727c/channels/rail/client/rail_orders.c#L75-L76
https://github.com/FreeRDP/FreeRDP/blob/3370e30e92a021eb680892dda14d642bc8b8727c/client/X11/xf_rail.c#L1014-L1017
https://github.com/FreeRDP/FreeRDP/blob/3370e30e92a021eb680892dda14d642bc8b8727c/client/X11/xf_rail.c#L40-L46
https://github.com/FreeRDP/FreeRDP/commit/9362a0bf8dda04eedbca07d5dfaec1044e67cc6b
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-78q6-67m7-wwf6
https://nvd.nist.gov/vuln/detail/CVE-2026-25942
https://www.cve.org/CVERecord?id=CVE-2026-25942