CVEvulnerability

CVE-2026-55999

7.8 HIGH Published 2026-07-08 Modified 2026-07-09 Official page ↗
Status
Analyzed
Published
2026-07-08
Last modified
2026-07-09
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.5 HIGH — CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS 3.1 ([email protected])
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-122

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.

Affected configurations

• x.org x server (< 21.2.24) • x.org xwayland (< 24.1.13)

Related

Weakness · CWE (1)

  • CWE-122 Heap-based Buffer Overflow weakness

References