CVE-2026-55999

CVE-2026-55999CVE-2026-55999

Description

Local attackers with a X connection able to provide PCX fonts to the X server xorg-server before 21.2.24 and xwayland before 24.1.13 could cause a heap buffer overflow via SetFont due to missing glyph boundary checks.

Scoring

CVSS 8.5 ()
VectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Last modified2026-07-09
Sourced from NVD. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.