CVE-2026-56002
8.8
HIGH
CVSS 3.1
EPSS 0.59%
Description
A heap bufferflow in pcfReadFont() due to missing glyph bounds checking in libXfont2 before 2.0.8 allows attackers authenticated as X client to execute code within the X server.
How to fix CVE-2026-56002
To remediate CVE-2026-56002, upgrade the affected package to a fixed version below.
- Debian/libxfont—upgrade to 1:2.0.4-1+deb11u1 or later
Is CVE-2026-56002 being exploited?
Low — EPSS is 0.6%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1:2.0.4-1+deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |