What’s Vulnerable › Vulnerabilities
CVE-2026-21531: Azure SDK for Python Remote Code Execution Vulnerability
- Severity: critical (CVSS 9.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 2.6% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-02-10 · updated 2026-08-19
- Weakness: CWE-502
Description
Deserialization of untrusted data in Azure SDK allows an unauthorized attacker to execute code over a network.
Affected products
- Microsoft Azure Conversation Authoring Client Library: 1.0.0-beta1, 1.0.0-beta2, 1.0.0-beta3
- Microsoft Azure AI Language Authoring: from 1.0.0 before 1.0.0b4 — fixed in 1.0.0b4
How to fix
Upgrade to a fixed version: Microsoft Azure AI Language Authoring 1.0.0b4. Check the vendor advisory for mitigations.
References
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