CVE-2024-21309

Windows Kernel-Mode Driver Elevation of Privilege Vulnerability

CVE-2024-21309 is fixed in 9 products on 1 platform, first by KB5034123, released January 9, 2024. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

7.8

Important

Exploitation

None reported

Exploitation Less Likely

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0076

55th percentile

Where it's fixed

Product	Fixed in	Fix	Released
Microsoft
Windows 11 Version 22H2 for ARM64-based Systems		KB5034123	Jan 9, 2024
Windows 11 Version 22H2 for x64-based Systems		KB5034123	Jan 9, 2024
Windows 11 Version 23H2 for ARM64-based Systems		KB5034123	Jan 9, 2024
Windows 11 Version 23H2 for x64-based Systems		KB5034123	Jan 9, 2024
Windows 11 version 21H2 for ARM64-based Systems	22000.2713	KB5034121	Jan 9, 2024
Windows 11 version 21H2 for x64-based Systems	22000.2713	KB5034121	Jan 9, 2024
Windows Server 2022	20348.2227	KB5034129	Jan 9, 2024
Windows Server 2022 (Server Core installation)	20348.2227	KB5034129	Jan 9, 2024
Windows Server 2022, 23H2 Edition (Server Core installation)	25398.643	KB5034130	Jan 9, 2024

Details

Published
January 9, 2024
Weakness
Integer Underflow (Wrap or Wraparound)
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21309

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