Out-of-bounds Read in Freerdp
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.008 (53.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.008 · change: +0.003
Affected products
- Freerdp — versions < 3.23.0
Weakness classification (CWE)
References
- github.com/FreeRDP/FreeRDP/security/advisories/GHSA-78q6-67m7-wwf6 (Exploit, Patch, Mitigation, Vendor Advisory)
- github.com/FreeRDP/FreeRDP/commit/9362a0bf8dda04eedbca07d5dfaec1044e67cc6b (Patch)
- github.com/FreeRDP/FreeRDP/blob/3370e30e92a021eb680892dda14d642bc8b8727c/channe… (Patch)
- github.com/FreeRDP/FreeRDP/blob/3370e30e92a021eb680892dda14d642bc8b8727c/channe… (Patch)
- github.com/FreeRDP/FreeRDP/blob/3370e30e92a021eb680892dda14d642bc8b8727c/client… (Patch)
- github.com/FreeRDP/FreeRDP/blob/3370e30e92a021eb680892dda14d642bc8b8727c/client… (Patch)
Frequently asked questions
- What is CVE-2026-25942?
- CVE-2026-25942 is a high-severity vulnerability in Freerdp, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2026-02-25.
- How severe is CVE-2026-25942?
- High severity. CVSS v3 base score is 7.5 out of 10.