VULNERABILITY INTELLIGENCE

CVE-2026-55999

CVSS score8.5 HIGH
EPSS probability0.33%
CISA KEVNot currently listed
Published2026-07-08
Last modified2026-07-09
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

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.

Weakness classification

  • meissner@suse.de: CWE-122

Primary references