What is the severity of CVE-2024-21342?

CVE-2024-21342 is classified as a denial of service vulnerability in the Windows DNS Client.

What versions of Windows are affected by CVE-2024-21342?

CVE-2024-21342 affects Windows 11 versions 22H2 and 23H2, as well as Windows Server 2022 23H2 edition.

How do I fix CVE-2024-21342?

To fix CVE-2024-21342, apply the security patches provided by Microsoft for the affected Windows versions.

Can CVE-2024-21342 affect Windows Server installations?

Yes, CVE-2024-21342 can affect Windows Server 2022 installations, specifically the 23H2 edition.

What tools can help manage the CVE-2024-21342 update process?

Using Windows Update or downloading the patches directly from the Microsoft Update Catalog can help manage the update process for CVE-2024-21342.

Vulnerability/
CVE-2024-21342

high

7.5

CWE

400

13/2/2024

3/5/2025

CVE-2024-21342: Windows DNS Client Denial of Service Vulnerability

First published: Tue Feb 13 2024(Updated: )

Windows DNS Client Denial of Service Vulnerability

Credit: secure@microsoft.com

Affected Software	Affected Version	How to fix
Microsoft Windows Server 2022 23H2		fix available externally
Windows 11	=23H2	fix available externally
Windows 11	=22H2	fix available externally
Windows 11	=22H2	fix available externally
Windows 11	=23H2	fix available externally
Windows 11	<10.0.22621.3155
Windows 11	<10.0.22621.3155
Microsoft Windows Server 2022	<10.0.25398.709

Remedy

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21342

Never miss a vulnerability like this again

Reference Links

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21342 (Advisory)

Frequently Asked Questions

What is the severity of CVE-2024-21342?
CVE-2024-21342 is classified as a denial of service vulnerability in the Windows DNS Client.
What versions of Windows are affected by CVE-2024-21342?
CVE-2024-21342 affects Windows 11 versions 22H2 and 23H2, as well as Windows Server 2022 23H2 edition.
How do I fix CVE-2024-21342?
To fix CVE-2024-21342, apply the security patches provided by Microsoft for the affected Windows versions.
Can CVE-2024-21342 affect Windows Server installations?
Yes, CVE-2024-21342 can affect Windows Server 2022 installations, specifically the 23H2 edition.
What tools can help manage the CVE-2024-21342 update process?
Using Windows Update or downloading the patches directly from the Microsoft Update Catalog can help manage the update process for CVE-2024-21342.

collector/msrc-cve
source/Microsoft
collector/msrc
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agent/software-canonical-lookup-request
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collector/nvd-api
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vendor/microsoft
canonical/microsoft windows server 2022 23h2
canonical/windows 11
version/windows 11/23h2
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canonical/microsoft windows server 2022

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