CVE-2023-36403: Windows Kernel Elevation of Privilege Vulnerability

Severity: high (CVSS 7.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-11-14 · updated 2026-06-17
Weakness: CWE-591

Description

Windows Kernel Elevation of Privilege Vulnerability

Affected products

Microsoft Windows 10 Version 1507: before 10.0.10240.20308 — fixed in 10.0.10240.20308
Microsoft Windows 10 1607: before 10.0.14393.6452 — fixed in 10.0.14393.6452
Microsoft Windows 10: before 10.0.17763.5122 — fixed in 10.0.17763.5122
Microsoft Windows 10: before 10.0.19041.3693 — fixed in 10.0.19041.3693
Microsoft Windows 10: before 10.0.19045.3693 — fixed in 10.0.19045.3693
Microsoft Windows 11 21H2: before 10.0.22000.2600 — fixed in 10.0.22000.2600
Microsoft Windows 11: before 10.0.22621.2715 — fixed in 10.0.22621.2715
Microsoft Windows 11: before 10.0.22631.2715 — fixed in 10.0.22631.2715
Microsoft Windows Server 2008: r2, sp2
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 Server 2022, 23H2 Edition (Server Core installation): before 10.0.25398.531 — fixed in 10.0.25398.531
Microsoft Windows 10 Version 1507: from 10.0.10240.0 before 10.0.10240.20308 — fixed in 10.0.10240.20308
Microsoft Windows 10 1607: from 10.0.14393.0 before 10.0.14393.6452 — fixed in 10.0.14393.6452
Microsoft Windows 10: from 10.0.17763.0 before 10.0.17763.5122 — fixed in 10.0.17763.5122
Microsoft Windows 10: from 10.0.19043.0 before 10.0.19043.3693 — fixed in 10.0.19043.3693
Microsoft Windows 10: from 10.0.19045.0 before 10.0.19045.3693 — fixed in 10.0.19045.3693
Microsoft Windows 11 21H2: from 10.0.0 before 10.0.22000.2600 — fixed in 10.0.22000.2600
Microsoft Windows 11: from 10.0.22621.0 before 10.0.22621.2715 — fixed in 10.0.22621.2715
Microsoft Windows 11 version 22H3: from 10.0.22631.0 before 10.0.22631.2715 — fixed in 10.0.22631.2715
Microsoft Windows 11: from 10.0.22631.0 before 10.0.22631.2715 — fixed in 10.0.22631.2715
Microsoft Windows Server 2008 R2 Service Pack 1: from 6.1.7601.0 before 6.1.7601.26816 — fixed in 6.1.7601.26816
Microsoft Windows Server 2008 Service Pack 2: from 6.0.6003.0 before 6.0.6003.22367 — fixed in 6.0.6003.22367
Microsoft Windows Server 2012: from 6.2.9200.0 before 6.2.9200.24569 — fixed in 6.2.9200.24569
Microsoft Windows Server 2012 R2: from 6.3.9600.0 before 6.3.9600.21668 — fixed in 6.3.9600.21668
Microsoft Windows Server 2016: from 10.0.14393.0 before 10.0.14393.6452 — fixed in 10.0.14393.6452
Microsoft Windows Server 2019: from 10.0.17763.0 before 10.0.17763.5122 — fixed in 10.0.17763.5122
Microsoft Windows Server 2022: from 10.0.20348.0 before 10.0.20348.2113 — fixed in 10.0.20348.2113

How to fix

Upgrade to a fixed version: Microsoft Windows 10 Version 1507 10.0.10240.20308; Microsoft Windows 10 1607 10.0.14393.6452; Microsoft Windows 10 10.0.17763.5122; Microsoft Windows 10 10.0.19041.3693; Microsoft Windows 10 10.0.19045.3693; Microsoft Windows 11 21H2 10.0.22000.2600; Microsoft Windows 11 10.0.22621.2715; Microsoft Windows 11 10.0.22631.2715; Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.531; Microsoft Windows 10 Version 1507 10.0.10240.20308; Microsoft Windows 10 1607 10.0.14393.6452; Microsoft Windows 10 10.0.17763.5122. Check the vendor advisory for mitigations.

References

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