JPCERT-AT-2025-0012
JPCERT/CC
2025-05-14

I. Overview

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

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

According to Microsoft, among the vulnerabilities, the following vulnerability 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-2025-30397
Scripting Engine Memory Corruption Vulnerability
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2025-30397

CVE-2025-30400
Microsoft DWM Core Library Elevation of Privilege Vulnerability
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2025-30400

CVE-2025-32701
Windows Common Log File System Driver Elevation of Privilege Vulnerability
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2025-32701

CVE-2025-32706
Windows Common Log File System Driver Elevation of Privilege Vulnerability
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2025-32706

CVE-2025-32709
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2025-32709

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/