CVE-2021-42311

Microsoft Defender for IoT Remote Code Execution Vulnerability

• CWE-89

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42311Patch, Vendor Advisory
• https://www.zerodayinitiative.com/advisories/ZDI-21-1556/Exploit, Third Party Advisory, VDB Entry
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42311Patch, Vendor Advisory
• https://www.zerodayinitiative.com/advisories/ZDI-21-1556/Exploit, Third Party Advisory, VDB Entry

Published

Dec 15, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

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