It’s that time of the month again! On the second Tuesday of April, Microsoft has deployed new security updates for its operating systems, including Windows and Office. This guide provides an extensive overview for IT professionals, system administrators, and users, detailing the updates released, the vulnerabilities addressed, and essential links for downloading these important fixes.
The April 2025 updates not only enhance security but also introduce some features and improvements. Below, you will find information on known issues, a downloadable Excel spreadsheet with update details, and links to direct download options.
Microsoft Windows Security Updates: April 2025
To access the list of updates released this month, please download the following Excel spreadsheet: Windows Security Updates April 2025.
Executive Summary
- Total Security Updates: 126 updates across Microsoft products and 9 for non-Microsoft vulnerabilities (e.g., Chromium).
- Notable Windows Client Issues:
- Windows 10 Versions: 1809, 21H2, 22H2.
- Windows 11 Versions: 22H2, 23H2, and 24H2.
- Windows Server Client Issues:
- Windows Server Versions: 2008, 2019, and 2022.
In-Depth Product Overview
Below is the breakdown of vulnerabilities by Windows version and their severity ratings, providing clarity for those managing these systems.
- Windows 10 Version 22H2: 60 total vulnerabilities (4 critical, 56 important)
- Windows Lightweight Directory Access Protocol (LDAP) Remote Code Execution Vulnerability — CVE-2025-26663
- LDAP Client Remote Code Execution Vulnerability — CVE-2025-26670
- Windows TCP/IP Remote Code Execution Vulnerability — CVE-2025-26686
- Windows Hyper-V Remote Code Execution Vulnerability — CVE-2025-27491
- Windows 11 Versions 22H2 and 23H2: 66 total vulnerabilities (2 critical, 64 important)
- Same as above vulnerabilities.
- Windows 11 Version 24H2: 66 total vulnerabilities (3 critical, 30 important)
- Same vulnerabilities as Version 22H3.
Windows Server Vulnerabilities
- Windows Server 2008 R2: 39 vulnerabilities (3 critical, 36 important).
- Windows Server 2016: 60 vulnerabilities (6 critical, 54 important).
- Windows Server 2019: 74 vulnerabilities (6 critical, 68 important).
- Windows Server 2022: 76 vulnerabilities (5 critical, 29 important).
Key App Updates for April 2025
Windows 10 Version 22H2
- Support Page: KB5055518
Updates and Improvements:
- Security updates addressing multiple vulnerabilities.
- Introduction of Noto CJK fonts.
- Enhanced support for EEA web search providers.
Windows 11 Versions 22H2, 23H2, and 24H2
- Support Page: KB5055523
Updates and Improvements:
- Security updates addressing vulnerabilities.
- New gamepad keyboard layout in touch keyboard.
- Voice access improvements for Chinese support.
- Top cards feature implementation in System > About.
Important Security Updates
- KB5055515 – Cumulative Security Update for Internet Explorer
- KB5057588 – Security Update for Microsoft Server OS Version 21H2
- KB5055518 – Cumulative Update for Windows 10 Version 22H2
Steps to Download and Install April 2025 Security Updates
Default installation for non-managed Windows systems occurs automatically, but manual checks can be beneficial in some cases. Before applying updates, creating a system backup is crucial.
Use a reliable backup solution like Paragon Backup & Recovery or any other of your choice for creating this backup.
To proceed with manual updates, follow these steps:
- Launch the Start menu, type in “Windows Update, ”and open the resulting application.
- Click on “Check for updates”to manually search for any available updates.
- Click the “Download & install all”option if your system hasn’t started downloading automatically.
Direct Download Links
For those preferring manual downloads, please find direct links below:
- Windows 10 Version 22H2: KB5055518 – 2025-04 Update
- Windows 11 Version 22H2: KB5055523 – 2025-04 Update
- Windows 11 Version 23H2: KB5055523 – 2025-04 Update
- Windows 11 Version 24H2: KB5055523 – 2025-04 Update
Additional Resources
- April 2025 Security Updates Release Notes
- Security Updates Guidance
- Microsoft Update Catalog
- In-depth Windows Update Guide
- Windows 11 Version 24H2 Update History
- Windows 10 Update History
Stay informed and proactive to secure your systems. For more detailed reports, stay tuned to regular updates from Microsoft.
Frequently Asked Questions
1. What security vulnerabilities are addressed in the April 2025 updates?
The April 2025 updates address a total of 126 security vulnerabilities across various Microsoft products, including critical vulnerabilities in Windows 10 and 11, as well as in Server editions.
2. How can I manually download the April 2025 security updates?
To manually download the updates, visit the Microsoft Update Catalog and search for the specific KB number associated with your version of Windows.
3. What should I do if I encounter issues after installing updates?
If you experience issues post-update, check the known issues list published by Microsoft for your specific version and consider applying the recommended workarounds.
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