Disclosure summary
Xorg: xwayland: x.org x server: use-after-free vulnerability leads to server crash and potential memory corruption
Source-reported weakness categories
CWE-825
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
Microsoft Security Updates (CVRF) · 2026-Apr
Open original source · Updated Sep 24, 2026
Xorg: xwayland: x.org x server: use-after-free vulnerability leads to server crash and potential memory corruption
Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.
Microsoft maximum product score: 7.8
| Vendor | Product / association | Version / bounds |
|---|---|---|
| Microsoft update guide | cbl2 xorg-x11-server 1.20.10-16 on CBL-Mariner 2.0 | (MSRC status code 3) |
| Microsoft update guide | cbl2 xorg-x11-server 1.20.10-16 on CBL Mariner 2.0 | (MSRC status code 3) |
| Microsoft update guide | azl3 xorg-x11-server-Xwayland 24.1.6-3 on Azure Linux 3.0 | (MSRC status code 3) |
| Microsoft update guide | azl3 xorg-x11-server-Xwayland 24.1.6-4 on Azure Linux 3.0 | (MSRC status code 3) |
| Microsoft update guide | cbl2 xorg-x11-server 1.20.10-16 | (MSRC status code 3) |
Vendor remediation references
- Release Notes · product IDs 20351-21692
- Vendor guidance · product IDs 20351-21692
- CBL-Mariner Releases · build 24.1.6-4 · product IDs 21247-17084, 21316-17084
- Vendor guidance · product IDs 21247-17084, 21316-17084
Original records & references
- NIST NVD record
- CVE Program record
- msrc.microsoft.com — Vendor advisory
PUBLISHED 2026-04-28T21:11:22-04:00
MODIFIED 2026-09-24T22:46:01-04:00
INGESTED 2026-10-08T12:45:03-04:00