CVE-2021-43882: Microsoft Defender For IoT

Critical severity, CVSS 9.8. EPSS: 2.6% chance of exploitation in the next 30 days.

Microsoft Defender for IoT Remote Code Execution Vulnerability

Affected products

• Microsoft Defender For IoT: before 10.5.3 (fixed in 10.5.3)

Published 2021-12-15. Last modified 2026-06-17.