Description:
Microsoft has released security updates addressing multiple vulnerabilities which affect several Microsoft products or components. The list of security updates can be found at:
https://msrc.microsoft.com/update-guide/releaseNote/2025-may
Reports indicated that the remote code execution vulnerability (CVE-2025-30397) and elevation of privilege vulnerabilities (CVE-2025-30400, CVE-2025-32701, CVE-2025-32706 and CVE-2025-32709) in Microsoft Windows and Server are being exploited in the wild. System administrators and users are advised to take immediate action to patch your affected systems to mitigate the elevated risk of cyber attacks.
Affected Systems:
- Microsoft Windows 10, 11
- Microsoft Windows Server 2008, 2008 R2, 2012, 2012 R2, 2016, 2019, 2022, 2022, 23H2 Edition, 2025
- Microsoft Office 2016, 2019, LTSC 2021, LTSC 2024, LTSC for Mac 2021, LTSC for Mac 2024
- Microsoft Office for Android, for Universal
- Microsoft Excel 2016
- Microsoft 365 Apps for Enterprise
- Microsoft SharePoint Enterprise Server 2016
- Microsoft SharePoint Server 2019, Subscription Edition
- Microsoft Visual Studio 2017, 2019, 2022
- Microsoft Defender for Endpoint for Linux
- Microsoft Defender for Identity
- Microsoft PC Manager
- .NET 8.0 installed, 8.0 installed on Linux, 8.0 installed on Mac OS, 9.0 installed, 9.0 installed on Linux, 9.0 installed on Mac OS
- Office Online Server
- Remote Desktop client for Windows Desktop
- Visual Studio Code
Impact:
Depending on the vulnerability exploited, a successful attack could lead to remote code execution, elevation of privilege, information disclosure, denial of service, security restriction bypass or spoofing on an affected system.
Recommendation:
Patches for affected products are available from the Windows Update / Microsoft Update Catalog. Users of affected systems should follow the recommendations provided by the product vendor and take immediate actions to mitigate the risk.
More Information:
- https://msrc.microsoft.com/update-guide/releaseNote/2025-may
- https://www.hkcert.org/security-bulletin/microsoft-monthly-security-update-may-2025
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-21264
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-24063
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-26646
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-26677
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-26684 (to CVE-2025-26685)
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-27468
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-27488
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-29826
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-29829 (to CVE-2025-29833)
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-29835 (to CVE-2025-29842)
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-29954 (to CVE-2025-29964)
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-29966 (to CVE-2025-29971)
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-29973 (to CVE-2025-29979)
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-30375 (to CVE-2025-30379)
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-30381 (to CVE-2025-30388)
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-30393 (to CVE-2025-30394)
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-30397
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-30400
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-32701 (to CVE-2025-32707)
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-32709
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-33072
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-44732 (to CVE-2025-44733)