HIGH 7.5 Microsoft

CVE-2026-39836

Panic in Dial and LookupPort when handling NUL byte on Windows in net

Microsoft Security Update 2026-May: Panic in Dial and LookupPort when handling NUL byte on Windows in net

Affected Products

azl3 golang 1.25.9-1 on Azure Linux 3.0
azl3 golang 1.26.2-1 on Azure Linux 3.0
azl3 gcc 13.2.0-7 on Azure Linux 3.0
azl3 golang 1.27.0-1 on Azure Linux 3.0

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-39836
https://nvd.nist.gov/vuln/detail/CVE-2026-39836

Published: 2026-05-12 · Source: Microsoft · Feed updated: 2026-09-18

This high severity vulnerability with a CVSS score of 7.5 was published on 2026-05-12 via Microsoft. Affected: azl3 golang 1.25.9-1 on Azure Linux 3.0, azl3 golang 1.26.2-1 on Azure Linux 3.0, azl3 gcc 13.2.0-7 on Azure Linux 3.0 and 1 more.

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