CVE-2026-34003: Xorg: xwayland: x.org x server: information exposure and denial of service via out-of-bounds memory access
Overview
- Severity
- High (CVSS 7.1)
- CVSS Vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H/E:U
- Exploit Status
- Not Exploited
- Patch Tuesday
- 2026-Apr
- Released
- 2026-04-29
- Last Updated
- 2026-09-05
- EPSS Score
- 0.25% (percentile: 16.3%)
Affected Products (5)
Other
- 20351
- 21316-17084
- 20351-21692
Open Source Software
- cbl2 xorg-x11-server 1.20.10-16 on CBL Mariner 2.0
- azl3 xorg-x11-server-Xwayland 24.1.6-3 on Azure Linux 3.0
Security Updates (1)
Revision History
- 2026-04-29: Information published.
- 2026-05-06: Information published.
- 2026-05-06: Information published.
- 2026-08-07: Information published.
- 2026-08-09: Information published.
- 2026-09-05: Information published.