CVE-2026-56003EPSS p47.7%

CVE-2026-56003CVE-2026-56003

x / libxfont

Description

A heap buffer overflow due to missing size checking in the property buffer when parsing PCF files in libXfont2 ComputeScaledProperties() before libXfont2 before 2.0.8 could be used by attackers using authenticated X clients to execute code within the X server.

Scoring

CVSS 8.5 ()
VectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS0.62% probability of exploitation · percentile 47.7% · 2026-10-05T12:00:23Z
Last modified2026-07-09
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.