MEDIUM 5.4 Microsoft

CVE-2026-3591

A stack use-after-return flaw in SIG(0) handling code may enable ACL bypass

Microsoft Security Update 2026-Mar: A stack use-after-return flaw in SIG(0) handling code may enable ACL bypass

Affected Products

azl3 bind 9.20.18-1 on Azure Linux 3.0

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-3591
https://nvd.nist.gov/vuln/detail/CVE-2026-3591

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

This medium severity vulnerability with a CVSS score of 5.4 was published on 2026-03-10 via Microsoft. Affected: azl3 bind 9.20.18-1 on Azure Linux 3.0.

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