HIGH 8.6 Microsoft
CVE-2026-5121
Libarchive: libarchive: arbitrary code execution via integer overflow in iso9660 image processing
Microsoft Security Update 2026-Mar: Libarchive: libarchive: arbitrary code execution via integer overflow in iso9660 image processing
Affected Products
- cbl2 libarchive 3.6.1-9 on CBL Mariner 2.0
- azl3 libarchive 3.7.7-5 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-5121
- https://nvd.nist.gov/vuln/detail/CVE-2026-5121
This high severity vulnerability with a CVSS score of 8.6 was published on 2026-03-10 via Microsoft. Affected: cbl2 libarchive 3.6.1-9 on CBL Mariner 2.0, azl3 libarchive 3.7.7-5 on Azure Linux 3.0.
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