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

High 7.8 Published Updated

An integer overflow in the Windows kernel-mode driver allows attackers to elevate privileges on affected systems.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Local or same network only
Victim action needed
Not needed
Fix
None listed

What is CVE-2024-21309?

CVE-2024-21309 is a high-severity vulnerability in Microsoft Windows 11 21h2, published on 9 Jan 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Windows Kernel-Mode Driver Elevation of Privilege Vulnerability

Weakness: CWE-191

Which versions are affected by CVE-2024-21309?

It affects 5 products.

Products include Microsoft Windows 11 21h2, Microsoft Windows 11 22h2, Microsoft Windows 11 23h2, Microsoft Windows Server 2022, Microsoft Windows Server 2022 23h2.

How do I fix CVE-2024-21309?

No fix has been published for CVE-2024-21309 yet. Limit exposure of the affected software until one is available.

Is CVE-2024-21309 being exploited?

There is no known exploitation of CVE-2024-21309 in the wild and no public exploit code.

All Microsoft Windows 11 21h2 vulnerabilities

Sources

Also known as GHSA-rx9g-96r8-m5g4.

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