CVE-2024-43631: Windows Secure Kernel Mode Elevation of Privilege Vulnerability

Severity: high (CVSS 7.8 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: 2024-11-12 · updated 2026-06-17
Weakness: CWE-822

Description

Windows Secure Kernel Mode Elevation of Privilege Vulnerability

Affected products

Microsoft Windows 10: before 10.0.19044.5131 — fixed in 10.0.19044.5131
Microsoft Windows 10: before 10.0.19045.5131 — fixed in 10.0.19045.5131
Microsoft Windows 11: before 10.0.22621.4460 — fixed in 10.0.22621.4460
Microsoft Windows 11: before 10.0.22631.4460 — fixed in 10.0.22631.4460
Microsoft Windows 11: before 10.0.26100.2314 — fixed in 10.0.26100.2314
Microsoft Windows Server 2022: before 10.0.20348.2849 — fixed in 10.0.20348.2849
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation): before 10.0.25398.1251 — fixed in 10.0.25398.1251
Microsoft Windows Server 2025: before 10.0.26100.2314 — fixed in 10.0.26100.2314
Microsoft Windows 10: from 10.0.19043.0 before 10.0.19044.5131 — fixed in 10.0.19044.5131
Microsoft Windows 10: from 10.0.19045.0 before 10.0.19045.5131 — fixed in 10.0.19045.5131
Microsoft Windows 11: from 10.0.22621.0 before 10.0.22621.4460 — fixed in 10.0.22621.4460
Microsoft Windows 11 version 22H3: from 10.0.22631.0 before 10.0.22631.4460 — fixed in 10.0.22631.4460
Microsoft Windows 11: from 10.0.22631.0 before 10.0.22631.4460 — fixed in 10.0.22631.4460
Microsoft Windows 11: from 10.0.26100.0 before 10.0.26100.2314 — fixed in 10.0.26100.2314
Microsoft Windows Server 2022: from 10.0.20348.0 before 10.0.20348.2849 — fixed in 10.0.20348.2849
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation): from 10.0.25398.0 before 10.0.25398.1251 — fixed in 10.0.25398.1251
Microsoft Windows Server 2025: from 10.0.26100.0 before 10.0.26100.2314 — fixed in 10.0.26100.2314

How to fix

Upgrade to a fixed version: Microsoft Windows 10 10.0.19044.5131; Microsoft Windows 10 10.0.19045.5131; Microsoft Windows 11 10.0.22621.4460; Microsoft Windows 11 10.0.22631.4460; Microsoft Windows 11 10.0.26100.2314; Microsoft Windows Server 2022 10.0.20348.2849; Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.1251; Microsoft Windows Server 2025 10.0.26100.2314; Microsoft Windows 10 10.0.19044.5131; Microsoft Windows 10 10.0.19045.5131; Microsoft Windows 11 10.0.22621.4460; Microsoft Windows 11 version 22H3 10.0.22631.4460. Check the vendor advisory for mitigations.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43631

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