CVE-2025-49179
7.3
HIGH
CVSS 3.1
EPSS 0.18%
Description
A flaw was found in the X Record extension. The RecordSanityCheckRegisterClients function does not check for an integer overflow when computing request length, which allows a client to bypass length checks.
How to fix CVE-2025-49179
To remediate CVE-2025-49179, upgrade the affected package to a fixed version below.
- Debian/xorg-server—upgrade to 2:1.20.11-1+deb11u16 or later
- Debian/xwayland—no fix listed
Is CVE-2025-49179 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 2:1.20.11-1+deb11u16
- from 0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.3 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H |