CVE-2025-49177
6.1
MEDIUM
CVSS 3.1
EPSS 0.09%
Description
A flaw was found in the XFIXES extension. The XFixesSetClientDisconnectMode handler does not validate the request length, allowing a client to read unintended memory from previous requests.
How to fix CVE-2025-49177
To remediate CVE-2025-49177, upgrade the affected package to a fixed version below.
- Debian/xorg-server—upgrade to 2:21.1.7-3+deb12u10 or later
- Debian/xwayland—no fix listed
Is CVE-2025-49177 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 2:21.1.7-3+deb12u10
- from 0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L |