JPCERT-AT-2025-0004
JPCERT/CC
2025-02-12

I. Overview

Microsoft has released February 2025 Security Updates to address the vulnerabilities in their products. Remote attackers leveraging these vulnerabilities may be able to execute arbitrary code.

Microsoft Corporation
February 2025 Security Updates
https://msrc.microsoft.com/update-guide/en-us/releaseNote/2025-Feb

According to Microsoft, among the vulnerabilities, the following vulnerabilities have been confirmed to be exploited in the wild. Please consider applying the security update programs by referring to the information provided by Microsoft.

CVE-2025-21391
Windows Storage Elevation of Privilege Vulnerability
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2025-21391

CVE-2025-21418
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2025-21418

II. Solution

Please apply the security update programs through Microsoft Update, Windows Update, etc.

Microsoft Update Catalog
https://www.catalog.update.microsoft.com/

Windows Update: FAQ
https://support.microsoft.com/en-us/help/12373/windows-update-faq

III. References

Microsoft Corporation
Release Notes
https://msrc.microsoft.com/update-guide/


If you have any information regarding this alert, please contact JPCERT/CC.

JPCERT Coordination Center (Early Warning Group)
MAIL: ew-info@jpcert.or.jp
https://www.jpcert.or.jp/english/