MEDIUM 6.5 Microsoft

CVE-2026-4426

Libarchive: libarchive: denial of service via malformed iso file processing

Microsoft Security Update 2026-Mar: Libarchive: libarchive: denial of service via malformed iso file processing

Affected Products

azl3 libarchive 3.7.7-4 on Azure Linux 3.0
cbl2 libarchive 3.6.1-8 on CBL Mariner 2.0
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-2026-4426
https://nvd.nist.gov/vuln/detail/CVE-2026-4426

Published: 2026-03-10 · Source: Microsoft · Feed updated: 2026-08-10

This medium severity vulnerability with a CVSS score of 6.5 was published on 2026-03-10 via Microsoft. Affected: azl3 libarchive 3.7.7-4 on Azure Linux 3.0, cbl2 libarchive 3.6.1-8 on CBL Mariner 2.0, cbl2 libarchive 3.6.1-9 on CBL Mariner 2.0 and 1 more.

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