CRITICAL 9.8 Microsoft

CVE-2026-27140

Code execution vulnerability in SWIG code generation in cmd/go

Microsoft Security Update 2026-Apr: Code execution vulnerability in SWIG code generation in cmd/go

Affected Products

azl3 golang 1.26.2-1 on Azure Linux 3.0
cbl2 golang 1.18.8-10 on CBL Mariner 2.0
cbl2 golang 1.22.7-5 on CBL Mariner 2.0
azl3 golang 1.25.8-1 on Azure Linux 3.0
azl3 golang 1.26.1-1 on Azure Linux 3.0
cbl2 msft-golang 1.25.8-1 on CBL Mariner 2.0
azl3 golang 1.25.9-1 on Azure Linux 3.0
azl3 golang 1.27.0-1 on Azure Linux 3.0

References

Published: 2026-04-14 · Source: Microsoft · Feed updated: 2026-11-08

This critical severity vulnerability with a CVSS score of 9.8 was published on 2026-04-14 via Microsoft. Affected: azl3 golang 1.26.2-1 on Azure Linux 3.0, cbl2 golang 1.18.8-10 on CBL Mariner 2.0, cbl2 golang 1.22.7-5 on CBL Mariner 2.0 and 5 more.

Risk Timeline

CVE Disclosed2026-04-14 · 207 days ago

Remediation Resources

Official Advisory

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27140

NVD / MITRE

nvd.nist.gov/vuln/detail/CVE-2026-27140

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