CVE-2022-21921

Name: CVE-2022-21921
Creator: NVD / NIST
Published: 2022-01-11T21:15:13.567+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.4/10EPSS 0.90%

Last modified Jun 17, 2026

CVE-2022-21921 is a medium-severity vulnerability rated 4.4/10 on the CVSS scale. Windows Defender Credential Guard Security Feature Bypass Vulnerability. EPSS estimates a 0.90% chance of exploitation in the next 30 days.

Description

Windows Defender Credential Guard Security Feature Bypass Vulnerability

Metrics

CVSS 3.1

4.4/10

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

0.90%

55.1th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Microsoft	Windows 10	20h2
Microsoft	Windows 10	21h1
Microsoft	Windows 10	21h2
Microsoft	Windows 11	All versions
Microsoft	Windows Server	20h2
Microsoft	Windows Server	2022

References

Timeline

Published: Jan 11, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-21921?

Windows Defender Credential Guard Security Feature Bypass Vulnerability

How severe is CVE-2022-21921?

CVE-2022-21921 has a CVSS score of 4.4/10 (MEDIUM severity). The EPSS model estimates a 0.90% probability of exploitation in the next 30 days.

How do I fix CVE-2022-21921?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-21921?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST