CVE-2022-34705: Windows Defender Credential Guard Elevation of Privilege Vulnerability

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-08-09 · updated 2026-06-17
Weakness: CWE-416

Description

Windows Defender Credential Guard Elevation of Privilege Vulnerability

Affected products

Microsoft Windows 10 Version 1607: 20h2, 21h1, 21h2, 1809
Microsoft Windows 11 version 21H2: all versions
Microsoft Windows Server 2016: 20h2
Microsoft Windows Server 2019: all versions
Microsoft Windows Server 2022: all versions
Microsoft Windows 10: from 10.0.17763.0 before 10.0.17763.3287 — fixed in 10.0.17763.3287
Microsoft Windows 10 20H2: from 10.0.0 before 10.0.19042.1889 — fixed in 10.0.19042.1889
Microsoft Windows 10 21H1: from 10.0.0 before 10.0.19043.1889 — fixed in 10.0.19043.1889
Microsoft Windows 10: from 10.0.19043.0 before 10.0.19044.1889 — fixed in 10.0.19044.1889
Microsoft Windows 11 21H2: from 10.0.0 before 10.0.22000.856 — fixed in 10.0.22000.856
Microsoft Windows Server 2019: from 10.0.17763.0 before 10.0.17763.3287 — fixed in 10.0.17763.3287
Microsoft Windows Server 2022: from 10.0.20348.0 before 10.0.20348.887 — fixed in 10.0.20348.887
Microsoft Windows Server version 20H2: from 10.0.0 before 10.0.19042.1889 — fixed in 10.0.19042.1889

How to fix

Upgrade to a fixed version: Microsoft Windows 10 10.0.17763.3287; Microsoft Windows 10 20H2 10.0.19042.1889; Microsoft Windows 10 21H1 10.0.19043.1889; Microsoft Windows 10 10.0.19044.1889; Microsoft Windows 11 21H2 10.0.22000.856; Microsoft Windows Server 2019 10.0.17763.3287; Microsoft Windows Server 2022 10.0.20348.887; Microsoft Windows Server version 20H2 10.0.19042.1889. Check the vendor advisory for mitigations.

References

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