CVE-2022-34725: Windows ALPC Elevation of Privilege Vulnerability

Severity: high (CVSS 7.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 5.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-09-13 · updated 2026-06-17
Weakness: CWE-362

Description

Windows ALPC Elevation of Privilege Vulnerability

Affected products

Microsoft Windows 10 Version 1607: 20h2, 21h1, 21h2, 1607, 1809
Microsoft Windows 11 version 21H2: all versions
Microsoft Windows 7: all versions
Microsoft Windows 8.1: all versions
Microsoft Windows RT 8.1: all versions
Microsoft Windows Server 2008: r2-sp1
Microsoft Windows Server 2012: r2
Microsoft Windows Server 2016: all versions
Microsoft Windows Server 2019: all versions
Microsoft Windows Server 2022: all versions
Microsoft Windows 10 Version 1507: from 10.0.10240.0 before 10.0.10240.19444 — fixed in 10.0.10240.19444
Microsoft Windows 10 1607: from 10.0.14393.0 before 10.0.14393.5356 — fixed in 10.0.14393.5356
Microsoft Windows 10: from 10.0.17763.0 before 10.0.17763.3406 — fixed in 10.0.17763.3406
Microsoft Windows 10 20H2: from 10.0.0 before 10.0.19042.2006 — fixed in 10.0.19042.2006
Microsoft Windows 10 21H1: from 10.0.0 before 10.0.19043.2006 — fixed in 10.0.19043.2006
Microsoft Windows 10: from 10.0.19043.0 before 10.0.19044.2006 — fixed in 10.0.19044.2006
Microsoft Windows 11 21H2: from 10.0.0 before 10.0.22000.978 — fixed in 10.0.22000.978
Microsoft Windows 8.1: from 6.3.0 before 6.3.9600.20571 — fixed in 6.3.9600.20571
Microsoft Windows Server 2012: from 6.2.9200.0 before 6.2.9200.23865 — fixed in 6.2.9200.23865
Microsoft Windows Server 2012 R2: from 6.3.9600.0 before 6.3.9600.20571 — fixed in 6.3.9600.20571
Microsoft Windows Server 2016: from 10.0.14393.0 before 10.0.14393.5356 — fixed in 10.0.14393.5356
Microsoft Windows Server 2019: from 10.0.17763.0 before 10.0.17763.3406 — fixed in 10.0.17763.3406
Microsoft Windows Server 2022: from 10.0.20348.0 before 10.0.20348.1006 — fixed in 10.0.20348.1006

How to fix

Upgrade to a fixed version: Microsoft Windows 10 Version 1507 10.0.10240.19444; Microsoft Windows 10 1607 10.0.14393.5356; Microsoft Windows 10 10.0.17763.3406; Microsoft Windows 10 20H2 10.0.19042.2006; Microsoft Windows 10 21H1 10.0.19043.2006; Microsoft Windows 10 10.0.19044.2006; Microsoft Windows 11 21H2 10.0.22000.978; Microsoft Windows 8.1 6.3.9600.20571; Microsoft Windows Server 2012 6.2.9200.23865; Microsoft Windows Server 2012 R2 6.3.9600.20571; Microsoft Windows Server 2016 10.0.14393.5356; Microsoft Windows Server 2019 10.0.17763.3406. Check the vendor advisory for mitigations.

References

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