October 2025 Windows Security Updates

by Priyanka Patel

Microsoft Rolls Out October 2025 Security updates, Marking End of Support for Windows 10

Microsoft has released its final official security update for Windows 10 alongside updates for Windows 11 and other products, including Microsoft Office, in October 2025. This marks a significant turning point for users of the aging operating system, prompting a reevaluation of their security posture. A total of 175 security updates were released for various Microsoft products, with an additional 21 addressing issues in non-Microsoft software like Chromium.

Windows 10 Reaches End of Life

For those continuing to use windows 10, the release of this final update underscores the importance of considering available options. According to Microsoft, the most practical solution for many users is likely to subscribe to the Extended Security Updates (ESU) program, which will provide another year of security support.

Vulnerability Breakdown Across Windows Versions

The October 2025 updates address a range of vulnerabilities across different Windows versions. Windows 10 version 22H2 contains 97 vulnerabilities, with two classified as critical and 95 as important. Thes include addressing the MITRE CVE-2016-9535 LibTIFF Heap Buffer Overflow Vulnerability and a Microsoft Graphics Component Elevation of Privilege Vulnerability (CVE-2025-49708).

Windows 11 versions also received ample updates:

  • Windows 11 version 23H2: 107 vulnerabilities (2 critical,105 critically important) – shares the same vulnerabilities as Windows 10 version 22H2.
  • Windows 11 version 24H2: 124 vulnerabilities (2 critical, 121 critically important, 1 moderate) – also shares the same vulnerabilities as Windows 10 version 22H2.
  • Windows 11 version 25H2: 116 vulnerabilities (2 critical,114 important) – again,shares the same vulnerabilities as Windows 10 version 22H2.

Server Updates and Critical Issues

Windows Server versions also received attention, with varying degrees of vulnerability.

  • Windows Server 2022: 89 vulnerabilities (1 critical, 88 critically important)
  • Windows Server 2019: 92 vulnerabilities (2 critical, 90 important)
  • Windows Server 2016: 95 vulnerabilities (1 critical, 94 important)

Windows 11 Specific Updates (Versions 24H2 & 25H2)

  • Fixes an issue affecting the ltmdm64.sys driver,impacting fax modem functionality.
  • Addresses a print preview issue in Chromium-based browsers (version 24H2).
  • Introduces “Edit,” a new command-line text editor accessible from the Terminal app (version 24H2).
  • Continues the gradual rollout of new features, some exclusive to Copilot+ PCs (version 24H2).
  • The WSUS issue has been resolved (version 24H2).

Notably, Windows 11 versions 24H2 and 25H2 share the same updates and improvements.

Known Issues and Workarounds

A known issue affects Windows 11 versions 24H2 and 25H2, causing problems with protected content playback in Blu-Ray, DVD, and Digital TV apps. Users may experience playback interruptions,copyright messages,or black screens. Microsoft reports that this issue was partially addressed in the September 2025 preview update and is further refined in this latest release.

Installation and Resources

Users can install the updates immediately thru Windows Update by manually checking for updates. Direct download links are also available for those who prefer manual installation.

Additional resources include:

  • October 2025 security Updates release notes
  • List of software updates for Microsoft products
  • Security Updates Guide
  • Microsoft Update Catalog site
  • in-depth Windows update guide
  • Windows 11 25H2 Update History
  • Windows 11 24H2 Update History
  • Windows 11 23H2 Update History
  • Windows 10 Update History

This complete update cycle underscores Microsoft’s ongoing commitment to security across its product ecosystem, even as it transitions away from supporting older operating systems like Windows 10.

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