Microsoft April 2026 Security Updates

 

The Microsoft April 2026 security updates have been released and consist of 163 new CVEs to Microsoft products and 84 non-Microsoft CVEs, including Chromium. 

Of the Microsoft CVEs released, 8 are rated Critical and the rest are rated Important in severity. At the time of release, one is listed as publicly known and one as being actively exploited.

The security updates apply to the following products, features and roles: Windows and Windows components, Office and Office Components, Microsoft Edge (Chromium-based), Azure, .NET and Visual Studio, SQL Server, Hyper-V Server, BitLocker, and the Windows Wallet Service.

Information regarding known issues with KBs included in the security updates can be found at the bottom of the page at April 2026 Security Updates - Release Notes - Security Update Guide - Microsoft.

Recommended Reading:  See Dustin Childs complete review and analysis in Zero Day Initiative -- The April 2026 Security Update Review.

Additional Update Notes:

• Windows 10 -- See Windows 10 Extended Security Updates (ESU).
• Servicing Stack Updates -- Microsoft now combines the latest servicing stack update (SSU) for your operating system with the Latest Cumulative Updates (LCU). For general information about SSUs, see Servicing stack updates and Servicing Stack Updates (SSU): Frequently Asked Questions.
  
• Windows updates are cumulative. The monthly security release includes all security fixes for vulnerabilities that affect Windows, in addition to non-security updates. The updates are also available via search for the KB number in the Microsoft Update Catalog.
• For information on lifecycle and support dates for Windows 11 operating systems, please see Windows 11 Home and Pro.
• Windows Update History:  Windows 11, Windows 10

 

References

• Security Update FAQ
• Security Updates Guide

Remember - "A day without laughter is a day wasted."
May the wind sing to you and the sun rise in your heart...

Mozilla Firefox Version 149.0.2 Released with Security Updates

 Mozilla sent Firefox Version 149.0.2 to the release channel. 

The update includes five security updates all of which are rated critical. The security updates can be reviewed here.

The update has a number of fixes.  To review the fixes, see the Release Notes.

Update:  To get the update now, select "Help" from the Firefox menu and pick "About Firefox".  Mac users need to select "About Firefox" from the Firefox menu.  If you do not use the English language version, Fully Localized Versions are available for download.

Rapid Release Calendar

Remember - "A day without laughter is a day wasted."
May the wind sing to you and the sun rise in your heart...

Pale Moon Version 34.2.0 Released with Security Updates

  Pale Moon has been updated to version 34.2.0. This is a development, bugfix and security update.

The update includes new features and numerous changes/fixes. The update also addresses security issues: CVE-2026-4707 (DiD), CVE-2026-4690 (DiD), CVE-2026-4727 (DiD), and others without a CVE designation. A note that Mozilla-relevant security issues CVE-2025-59375 and CVE-2026-4726 had already been addressed in the browser before this release.

*DiD: This means that a fix is "Defense-in-Depth": It is a fix that does not apply to a (potentially) actively exploitable vulnerability in Pale Moon, but prevents future vulnerabilities caused by the same code, e.g. when surrounding code changes, exposing the problem, or when new attack vectors are discovered.

Note: This release as well as the preceding release is having a problem loading the Yahoo.com home page (forum discussion).

Pale Moon includes both 32- and 64-bit versions for Windows: Pale Moon for Windows downloads.

Update: To get the update now, select "Help" from the Pale Moon menu at the upper left of the browser window.  Select About Pale Moon > Check for Updates.

Note: This release as well as the preceding release is having a problem loading the Yahoo.com home page (forum discussion). 

Release Notes
Release Cycle

Remember - "A day without laughter is a day wasted."