The last Windows security updates of 2025 are here

It is December 2025 already and Microsoft has released the last security updates of the year for its Windows operating system just a moment ago. The updates are available for all supported versions of Windows, including Windows 10, which is on life-support already with extended support releases.

Our weekly overview provides home users and system administrators with actionable information. While it depends on Microsoft to a large margin, it gives a quick overview of the updates that Microsoft released, the severity of security issues and more. It also links to support pages and downloads, and lists all confirmed issues by Microsoft.

As announced last month already, Windows 11, version 23H2 Home and Pro editions do not receive updates anymore. Users should be able to update to a newer version of Windows 11 to continue receiving updates.

Microsoft Windows Security Updates: December 2025

You may download the following Excel spreadsheet to get a list of released updates. Click on the following link to download the archive to the local device: Windows security updates December 2025

Executive Summary

• Microsoft released a total of 57 security updates for various Microsoft products and 13 security update for non-Microsoft issues (e.g. Chromium).
• No critical issues for Windows client and server systems according to Microsoft.
• Windows clients with issues:
  • Windows 10: none
  • Windows 11: 24H2 and 25H2
• Windows Server clients with issues:
  • Windows Server 2008, 23H2, 2022, 2025

Product overview

Each supported version of Windows and their critical vulnerabilities are listed below.

• Windows 10 version 22H2: 31 vulnerabilities, 0 critical, 31 important
  • No critical vulnerabilities.
• Windows 11 version 24H2: 36 vulnerabilities, 0 critical, 36 important
  • No critical vulnerabilities.
• Windows 11 version 25H2: 36 vulnerabilities, 0 critical, 36 important
  • No critical vulnerabilities.

Windows Server products

• Windows Server 2008 R2 (extended support only): 11 vulnerabilities: 0 critical,  11 important
  • No critical vulnerabilities.
• Windows Server 2016: 18 vulnerabilities: 0 critical, 18 important
  • No critical vulnerabilities.
• Windows Server 2019: 29 vulnerabilities: 0 critical, 29 important
  • No critical vulnerabilities.
• Windows Server 2022: 32 vulnerabilities: 0 critical, 32 important
  • No critical vulnerabilities.
• Windows Server 2025:  36 vulnerabilities: 0 critical, 36 important
  • No critical vulnerabilities.

Windows Security Updates

Windows 10 version 22H2

Updates and improvements:

• [Powershell] The Invoke-WebRequest command now includes a confirmation prompt with a security warning of a script execution risk. This prevents script execution from web content without user authorization.
• Security updates.

Windows 11 version 24H2 and 25H2

Updates and improvements:

• Fixed: This update addresses an issue where Ask Copilot didn’t activate the Click to Do window as expected
• Fixed: This update addresses an issue where File Explorer briefly flashes white when you navigate between pages.
• Fixed: This update fixes an issue where external virtual switches lose their physical network adapter (NIC) bindings after a host reboot.
• [Powershell] The Invoke-WebRequest command now includes a confirmation prompt with a security warning of a script execution risk. This prevents script execution from web content without user authorization.
• Security updates.

Known Issues

Windows 11 version 24H2 and 25H2

• [NEW] Password buttons may be missing or invisible in the lock screen sign-in options.
  • Workaround: The issue is mitigated using Known Issues Rollback. Users can hover over the invisible password button to click and activate it.

Security advisories and updates

Microsoft Office Updates

How to download and install the December 2025 security updates

Microsoft distributes security updates automatically to consumer devices and non-managed devices by default. It make take hours or days before they are offered on a particular system, but there is a workaround for getting them right away.

Here is how you install the update immediately on a system:

1. Open the Start menu, type Windows Update, and select the result.
2. Activate the “check for updates” button. This runs a manual check for updates.
3. Activate the “download & install all” button, if the update is not downloaded automatically.

I suggest you create a system backup before installing any updates for Windows.

Direct update downloads

Below are resource pages with direct download links, if you prefer to download the updates to install them manually.

Windows 11 version 24H2 and 25H2

Additional resources

Summary

Article Name

The last Windows security updates of 2025 are here

Description

Here is an overview of the security updates for Windows that Microsoft released in December 2025.

Author

Martin Brinkmann

Publisher

Ghacks Technology News

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