Is CVE-2022-21921 in the CISA KEV catalog?

No. CVE-2022-21921 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-21921?

CVE-2022-21921 has a CVSS v3 base score of 4.4 (MEDIUM).

What is the EPSS score for CVE-2022-21921?

CVE-2022-21921 has an EPSS score of 0.90% (55th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-21921?

Install KB5009543 for Windows 10 Version 20H2. Fixes are available for 7 affected products.

CVE & CISA-KEV Catalog

CVE-2022-21921

MEDIUM

4.4

CVSS v3

NVD

Description

Windows Defender Credential Guard Security Feature Bypass Vulnerability

How to fix

Remediation Available

Windows 10 Version 20H2Windows

Install:KB5009543Microsoft

Windows 10 Version 21H1Windows

Install:KB5009543Microsoft

Windows 10 Version 21H2Windows

Install:KB5009543Microsoft

Windows 11 version 21H2Windows

Install:KB5009566Microsoft

Windows Server 2022Windows

Install:KB5009555Microsoft

Windows Server 2022 (Server Core installation)Windows

Install:KB5009555Microsoft

Windows Server, version 20H2 (Server Core Installation)Windows

Install:KB5009543Microsoft

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredHigh

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

0.90%probability of exploitation in 30 days

55thpercentile

Moderate risk: more likely to be exploited than 55% of all known CVEs.

References

Other references2

Embed a live status badge for CVE-2022-21921

Markdown

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HTML

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.