CRITICAL 9.1 Microsoft
CVE-2026-42508
Invoking auth bypass via unenforced @revoked status in golang.org/x/crypto/ssh/knownhosts
Microsoft Security Update 2026-May: Invoking auth bypass via unenforced @revoked status in golang.org/x/crypto/ssh/knownhosts
Affected Products
- azl3 libcontainers-common 20240213-3 on Azure Linux 3.0
- azl3 packer 1.9.5-13 on Azure Linux 3.0
- azl3 telegraf 1.31.0-19 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42508
- https://nvd.nist.gov/vuln/detail/CVE-2026-42508
This critical severity vulnerability with a CVSS score of 9.1 was published on 2026-05-12 via Microsoft. Affected: azl3 libcontainers-common 20240213-3 on Azure Linux 3.0, azl3 packer 1.9.5-13 on Azure Linux 3.0, azl3 telegraf 1.31.0-19 on Azure Linux 3.0.
Risk Timeline
CVE Disclosed2026-05-12 · 83 days ago
Remediation Resources
Official Advisory
msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42508NVD / MITRE
nvd.nist.gov/vuln/detail/CVE-2026-42508Related Vulnerabilities
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| CVE-2024-24576 PoC | Rusts's `std::process::Command` did not properly escape arguments of batch files | CRITICAL | 10.0 |
| CVE-2026-7374 | Kubevirt: kubevirt virt-handler: privilege escalation and node compromise via sy | CRITICAL | 9.9 |
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