HIGH 7.5 Microsoft
CVE-2026-81634
Possible heap buffer overflow during DNSSEC canonicalization
Microsoft Security Update 2026-Sep: Possible heap buffer overflow during DNSSEC canonicalization
Affected Products
- azl3 unbound 1.26.0-1 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-81634
- https://nvd.nist.gov/vuln/detail/CVE-2026-81634
This high severity vulnerability with a CVSS score of 7.5 was published on 2026-09-08 via Microsoft. Affected: azl3 unbound 1.26.0-1 on Azure Linux 3.0.
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