MEDIUM 6.5 Microsoft
CVE-2026-91768
IPv6 ACL bypass in FastCGI listen.allowed_clients due to partial address comparison (memcmp 12 bytes)
Microsoft Security Update 2026-Sep: IPv6 ACL bypass in FastCGI listen.allowed_clients due to partial address comparison (memcmp 12 bytes)
Affected Products
- azl3 php 8.3.33-1 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-91768
- https://nvd.nist.gov/vuln/detail/CVE-2026-91768
This medium severity vulnerability with a CVSS score of 6.5 was published on 2026-09-08 via Microsoft. Affected: azl3 php 8.3.33-1 on Azure Linux 3.0.
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