CVE-2026-56003
HIGH
NVD
CVSS Score
8.5
Severity
HIGH
Published
Jul 08, 2026
Vendor
unknown
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.