CVE-2021-42311

Critical (10.0) in microsoft defender for iot. EPSS 4.4% chance of exploitation in the next 30 days.

EPSS

4.4% chance of exploitation in the next 30 days; higher than 91% of CVEs (scores of 2026-10-31)

CWE

CWE-89

Published

2021-12-15

Modified

2026-06-17

Record from

the NVD, synced 2026-10-19

Affected

• microsoft:defender_for_iot

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42311
• https://www.zerodayinitiative.com/advisories/ZDI-21-1556/
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42311
• https://www.zerodayinitiative.com/advisories/ZDI-21-1556/

Check your stackJSON