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CVE-2024-21309: Windows Kernel-Mode Driver Elevation of Privilege Vulnerability

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-01-09 · updated 2026-06-17
• Weakness: CWE-191

Description

Windows Kernel-Mode Driver Elevation of Privilege Vulnerability

Affected products

• Microsoft Windows 11 21H2: before 10.0.22000.2713 — fixed in 10.0.22000.2713
• Microsoft Windows 11: before 10.0.22621.3007 — fixed in 10.0.22621.3007
• Microsoft Windows 11: before 10.0.22631.3007 — fixed in 10.0.22631.3007
• Microsoft Windows Server 2022: before 10.0.20348.2227 — fixed in 10.0.20348.2227
• Microsoft Windows Server 2022, 23H2 Edition (Server Core installation): before 10.0.25398.643 — fixed in 10.0.25398.643
• Microsoft Windows 11 21H2: from 10.0.0 before 10.0.22000.2713 — fixed in 10.0.22000.2713
• Microsoft Windows 11: from 10.0.22621.0 before 10.0.22621.3007 — fixed in 10.0.22621.3007
• Microsoft Windows 11 version 22H3: from 10.0.22631.0 before 10.0.22631.3007 — fixed in 10.0.22631.3007
• Microsoft Windows 11: from 10.0.22631.0 before 10.0.22631.3007 — fixed in 10.0.22631.3007
• Microsoft Windows Server 2022: from 10.0.20348.0 before 10.0.20348.2227 — fixed in 10.0.20348.2227
• Microsoft Windows Server 2022, 23H2 Edition (Server Core installation): from 10.0.25398.0 before 10.0.25398.643 — fixed in 10.0.25398.643

How to fix

Upgrade to a fixed version: Microsoft Windows 11 21H2 10.0.22000.2713; Microsoft Windows 11 10.0.22621.3007; Microsoft Windows 11 10.0.22631.3007; Microsoft Windows Server 2022 10.0.20348.2227; Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.643; Microsoft Windows 11 21H2 10.0.22000.2713; Microsoft Windows 11 10.0.22621.3007; Microsoft Windows 11 version 22H3 10.0.22631.3007; Microsoft Windows 11 10.0.22631.3007; Microsoft Windows Server 2022 10.0.20348.2227; Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.643. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21309
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21309

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