What is the severity of CVE-2025-21336?

CVE-2025-21336 has been classified with a medium severity level, indicating potential risk to affected systems.

How do I fix CVE-2025-21336?

To mitigate CVE-2025-21336, ensure that the relevant patches provided by Microsoft are installed on affected Windows versions.

Which versions of Windows are affected by CVE-2025-21336?

CVE-2025-21336 affects multiple versions of Windows 10 and Windows 11, along with various editions of Windows Server.

What type of vulnerability is CVE-2025-21336?

CVE-2025-21336 is a cryptographic information disclosure vulnerability, allowing sensitive information to be potentially revealed.

Is CVE-2025-21336 being actively exploited?

As of the latest updates, there have been no confirmed reports of active exploitation of CVE-2025-21336 in the wild.

Vulnerability/
CVE-2025-21336

medium

5.6

CWE

203

EPSS

0.053%

14/1/2025

2/4/2025

CVE-2025-21336: Windows Cryptographic Information Disclosure Vulnerability

First published: Tue Jan 14 2025(Updated: )

Windows Cryptographic Information Disclosure Vulnerability

Credit: secure@microsoft.com

Affected Software	Affected Version	How to fix
Microsoft Windows Server 2008 R2		fix available externally fix available externally
Microsoft Windows Server 2012 R2		fix available externally
Microsoft Windows Server 2025		fix available externally
Microsoft Windows Server 2008 R2		fix available externally fix available externally
Microsoft Windows Server 2012 R2		fix available externally
Microsoft Windows Server 2025		fix available externally
Microsoft Windows Server 2022 23H2		fix available externally
Microsoft Windows Server		fix available externally
Microsoft Windows Server		fix available externally
Microsoft Windows Server		fix available externally fix available externally
Microsoft Windows Server		fix available externally fix available externally
Microsoft Windows Server		fix available externally fix available externally
Microsoft Windows Server		fix available externally fix available externally
Microsoft Windows Server 2019		fix available externally
Microsoft Windows Server 2019		fix available externally
Windows 11	=23H2	fix available externally
Windows 11	=22H2	fix available externally
Windows 11	=22H2	fix available externally
Windows 11	=24H2	fix available externally
Windows 11	=24H2	fix available externally
Windows 11	=23H2	fix available externally
Microsoft Windows Server 2022		fix available externally
Microsoft Windows Server 2022		fix available externally
Microsoft Windows 10	<10.0.10240.20890
Microsoft Windows 10	<10.0.10240.20890
Microsoft Windows 10	<10.0.14393.7699
Microsoft Windows 10	<10.0.14393.7699
Microsoft Windows 10	<10.0.17763.6775
Microsoft Windows 10	<10.0.17763.6775
Microsoft Windows 10	<10.0.19044.5371
Microsoft Windows 10	<10.0.19045.5371
Windows 11	<10.0.22621.4751
Windows 11	<10.0.22621.4751
Windows 11	<10.0.22631.4751
Windows 11	<10.0.26100.2894
Microsoft Windows Server	=sp2
Microsoft Windows Server	=r2-sp1
Microsoft Windows Server
Microsoft Windows Server	=r2
Microsoft Windows Server 2016	<10.0.14393.7699
Microsoft Windows Server 2019	<10.0.17763.6775
Microsoft Windows Server 2022	<10.0.20348.3091
Microsoft Windows Server 2022	<10.0.25398.1369
Microsoft Windows Server 2025	<10.0.26100.2894
Microsoft Windows Server 2016		fix available externally
Microsoft Windows Server 2016		fix available externally
Windows 10	=1809	fix available externally
Windows 10	=1809	fix available externally
Windows 10	=22H2	fix available externally
Windows 10	=22H2	fix available externally
Windows 10	=22H2	fix available externally
Windows 10	=1607	fix available externally
Windows 10	=1607	fix available externally
Windows 10	=21H2	fix available externally
Windows 10	=21H2	fix available externally
Windows 10	=21H2	fix available externally
Windows 10		fix available externally
Windows 10		fix available externally

Remedy

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21336

Never miss a vulnerability like this again

Reference Links

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21336 (Advisory)

Frequently Asked Questions

What is the severity of CVE-2025-21336?
CVE-2025-21336 has been classified with a medium severity level, indicating potential risk to affected systems.
How do I fix CVE-2025-21336?
To mitigate CVE-2025-21336, ensure that the relevant patches provided by Microsoft are installed on affected Windows versions.
Which versions of Windows are affected by CVE-2025-21336?
CVE-2025-21336 affects multiple versions of Windows 10 and Windows 11, along with various editions of Windows Server.
What type of vulnerability is CVE-2025-21336?
CVE-2025-21336 is a cryptographic information disclosure vulnerability, allowing sensitive information to be potentially revealed.
Is CVE-2025-21336 being actively exploited?
As of the latest updates, there have been no confirmed reports of active exploitation of CVE-2025-21336 in the wild.

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