Disclosure summary
Libarchive: heap buffer over read in copy_from_lzss_window() at archive_read_support_format_rar.c
Source-reported weakness categories
CWE-122
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-Jun
Open original source · Updated Aug 12, 2026
Libarchive: heap buffer over read in copy_from_lzss_window() at archive_read_support_format_rar.c
Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.
Microsoft maximum product score: 3.9
| Vendor | Product / association | Version / bounds |
|---|---|---|
| Microsoft update guide | azl3 libarchive 3.7.7-2 on Azure Linux 3.0 | (MSRC status code 3) |
| Microsoft update guide | cbl2 libarchive 3.6.1-6 on CBL Mariner 2.0 | (MSRC status code 3) |
| Microsoft update guide | cbl2 libarchive 3.6.1-7 on CBL Mariner 2.0 | (MSRC status code 3) |
| Microsoft update guide | cbl2 libarchive 3.6.1-7 on CBL-Mariner 2.0 | (MSRC status code 3) |
| Microsoft update guide | azl3 libarchive 3.7.7-3 on Azure Linux 3.0 | (MSRC status code 3) |
Vendor remediation references
- CBL-Mariner Releases · build 3.7.7-3 · product IDs 19277-17084, 20422-17084
- Vendor guidance · product IDs 19277-17084, 20422-17084
- CBL-Mariner Releases · build 3.6.1-7 · product IDs 19704-17086, 20388-17086, 20388-21692
- Vendor guidance · product IDs 19704-17086, 20388-17086, 20388-21692
Original records & references
- NIST NVD record
- CVE Program record
- msrc.microsoft.com — Vendor advisory
PUBLISHED 2025-09-03T19:53:33-04:00
MODIFIED 2026-08-12T19:45:30-04:00
INGESTED 2026-10-08T12:50:05-04:00