CVE-2024-21443: Windows Kernel Elevation of Privilege Vulnerability

Severity: high (CVSS 7.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-03-12 · updated 2026-06-17
Weakness: CWE-416

Description

Windows Kernel Elevation of Privilege Vulnerability

Affected products

Microsoft Windows 10: before 10.0.17763.5576 — fixed in 10.0.17763.5576
Microsoft Windows 10: before 10.0.19044.4170 — fixed in 10.0.19044.4170
Microsoft Windows 10: before 10.0.19045.4170 — fixed in 10.0.19045.4170
Microsoft Windows 11 21H2: before 10.0.22000.2836 — fixed in 10.0.22000.2836
Microsoft Windows 11: before 10.0.22621.3296 — fixed in 10.0.22621.3296
Microsoft Windows 11: before 10.0.22631.3296 — fixed in 10.0.22631.3296
Microsoft Windows Server 2019: before 10.0.17763.5576 — fixed in 10.0.17763.5576
Microsoft Windows Server 2022: before 10.0.20348.2340 — fixed in 10.0.20348.2340
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation): before 10.0.25398.763 — fixed in 10.0.25398.763
Microsoft Windows 10: from 10.0.17763.0 before 10.0.17763.5576 — fixed in 10.0.17763.5576
Microsoft Windows 10: from 10.0.19043.0 before 10.0.19044.4170 — fixed in 10.0.19044.4170
Microsoft Windows 10: from 10.0.19045.0 before 10.0.19045.4170 — fixed in 10.0.19045.4170
Microsoft Windows 11 21H2: from 10.0.0 before 10.0.22000.2836 — fixed in 10.0.22000.2836
Microsoft Windows 11: from 10.0.22621.0 before 10.0.22621.3296 — fixed in 10.0.22621.3296
Microsoft Windows 11 version 22H3: from 10.0.22631.0 before 10.0.22631.3296 — fixed in 10.0.22631.3296
Microsoft Windows 11: from 10.0.22631.0 before 10.0.22631.3296 — fixed in 10.0.22631.3296
Microsoft Windows Server 2019: from 10.0.17763.0 before 10.0.17763.5576 — fixed in 10.0.17763.5576
Microsoft Windows Server 2022: from 10.0.20348.0 before 10.0.20348.2340 — fixed in 10.0.20348.2340
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation): from 10.0.25398.0 before 10.0.25398.763 — fixed in 10.0.25398.763

How to fix

Upgrade to a fixed version: Microsoft Windows 10 10.0.17763.5576; Microsoft Windows 10 10.0.19044.4170; Microsoft Windows 10 10.0.19045.4170; Microsoft Windows 11 21H2 10.0.22000.2836; Microsoft Windows 11 10.0.22621.3296; Microsoft Windows 11 10.0.22631.3296; Microsoft Windows Server 2019 10.0.17763.5576; Microsoft Windows Server 2022 10.0.20348.2340; Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.763; Microsoft Windows 10 10.0.17763.5576; Microsoft Windows 10 10.0.19044.4170; Microsoft Windows 10 10.0.19045.4170. Check the vendor advisory for mitigations.

References

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