Security Advisory
CVE-2026-56003
8.5
HIGH
Vulnerability 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.
Published Date
July 8, 2026
Official Source
NIST NVD Advisory