Microsoft's February Patch Tuesday release is not just large in size but also significant in scope, addressing critical security vulnerabilities and introducing new features. Released on February 11, these updates are essential for all Windows 11 users.

New Features and Enhancements

The updates, identified as KB5051987 for Windows 11 24H2 and KB5051989 for Windows 11 23H2, bring improvements to key Windows features. Enhancements include better animations and previews for Taskbar icons and a new System Tray icon for apps using Windows Studio Effects.

  • Introduction of a new simplified Chinese font, Simsun-ExtG.
  • Automatic restart of certain apps upon sign-in, configurable via Settings > Accounts > Sign-in options.
  • File Explorer tweaks, such as a new "New Folder" command in the context menu and restored tabs upon login.

Bug Fixes and Improvements

This update also addresses several bugs that previously affected user experience. Issues like repeated searches in File Explorer, incorrect date and time properties after file copying, and theme-related icon updates have been resolved.

  • Fixes for oversaturated game displays when using Auto HDR.
  • Resolved playback issues with USB audio devices and DACs.
  • Correction of USB camera recognition and passkey timeout problems.

Security Vulnerabilities Addressed

Security remains a priority with this update, which patches 56 vulnerabilities, including three critical ones. Notably, two zero-day flaws have been fixed, enhancing system protection.

  • CVE-2025-21391: Potential file deletion vulnerability.
  • CVE-2025-21418: Remote code execution risk.
  • CVE-2025-21377: Authentication credential spoofing threat.
  • CVE-2025-21376: Critical risk of malicious code execution.

The KB5051987 and KB5051989 patches are the final versions following the January preview updates. These patches are more stable and set to install automatically. If not, users can manually check for updates via Settings > Windows Update > Check for updates.

Stay informed about zero-day vulnerabilities by visiting our Intel section for detailed insights.

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