Disclosure summary
Libarchive: infinite loop denial of service in rar5 decompression via archive_read_data() in libarchive
Source-reported weakness categories
CWE-835
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-Mar
Open original source · Updated Mar 18, 2026
Libarchive: infinite loop denial of service in rar5 decompression via archive_read_data() in libarchive
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 | cbl2 libarchive 3.6.1-8 on CBL Mariner 2.0 | (MSRC status code 3) |
| Microsoft update guide | azl3 libarchive 3.7.7-4 on Azure Linux 3.0 | (MSRC status code 3) |
Vendor remediation references
- CBL-Mariner Releases · build 3.6.1-9 · product IDs 20889-17086
- Vendor guidance · product IDs 20889-17086
- CBL-Mariner Releases · build 3.7.7-5 · product IDs 20888-17084
- Vendor guidance · product IDs 20888-17084
Original records & references
- NIST NVD record
- CVE Program record
- msrc.microsoft.com — Vendor advisory
PUBLISHED 2026-03-16T21:02:12-04:00
MODIFIED 2026-03-18T10:36:47-04:00
INGESTED 2026-10-08T12:45:09-04:00