Disclosure summary
Libexpat: expat: improper restriction of xml entity expansion depth in libexpat
Source-reported weakness categories
CWE-674
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) · 2025-Mar
Open original source · Updated Aug 12, 2026
Libexpat: expat: improper restriction of xml entity expansion depth in libexpat
Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.
Microsoft maximum product score: 7.5
| Vendor | Product / association | Version / bounds |
|---|---|---|
| Microsoft update guide | azl3 expat 2.6.4-1 on Azure Linux 3.0 | (MSRC status code 3) |
| Microsoft update guide | cbl2 expat 2.6.4-1 on CBL Mariner 2.0 | (MSRC status code 3) |
| Microsoft update guide | cbl2 expat 2.6.4-1 on CBL-Mariner 2.0 | (MSRC status code 3) |
Vendor remediation references
- CBL-Mariner Releases · build 2.6.4-1 · product IDs 17470-17084, 20210-17086, 20210-21692
- Vendor guidance · product IDs 17470-17084, 20210-17086, 20210-21692
Original records & references
- NIST NVD record
- CVE Program record
- msrc.microsoft.com — Vendor advisory
PUBLISHED 2025-03-25T20:00:00-04:00
MODIFIED 2026-08-12T18:11:15-04:00
INGESTED 2026-10-08T12:50:09-04:00