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CVE-2026-21531: Critical Vulnerability in Azure SDK Allows Unauthorized Code Execution

CVE-2026-21531: Critical Vulnerability in Azure SDK Allows Unauthorized Code Execution

First seen 12 Feb 2026, 21:16 UTC • •

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ThreatCluster AI
ThreatCluster •March 12, 2026 at 16:10 UTC

CVE-2026-21531, with a CVSS score of 9.8, affects the Azure SDK due to improper certificate validation. This vulnerability allows unauthorized attackers to execute code over a network, posing significant risks to users of the Azure platform. Immediate attention and remediation are advised to mitigate potential exploitation.

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Updated 213d ago How this analysis works

Timeline

2026-02-10
CVE-2026-21531 announced by Microsoft
2026-02-11
Technical deep-dive blog post published on Medium

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