CVE-2026-25942 - Vulnerability Analysis
HighCVSS: 7.5Last Updated: February 27, 2026
FreeRDP - Out of Bounds Read
Published: February 25, 2026Updated: February 27, 2026PoC AvailableRemote Exploitable
Overview
FreeRDP < 3.23.0 contains an out-of-bounds read caused by unchecked indexing of the global error_code_names array in xf_rail_server_execute_result, letting remote attackers read memory out-of-bounds, exploit requires crafted server response.
Severity & Score
Severity: High
CVSS Score: 7.5
Impact
Remote attackers can read out-of-bounds memory, potentially leaking sensitive information or causing application crashes.
Mitigation
Update to version 3.23.0 or later.
References
- 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://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
Related Resources
Details
- CVE ID
- CVE-2026-25942
- Severity
- High
- CVSS Score
- 7.5
- Type
- out_of_bounds_rw
- Status
- confirmed
CWE
- CWE-125
CVSS Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H