Microsoft June 2026 Security Updates

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The Microsoft June 2026 security updates have been released and consist of 208 new CVEs to Microsoft products.

Of the Microsoft CVEs released, 39 are rated Critical, 167 are rated Important and the rest are rated Low in severity. At the time of release, three are 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, Github Copilot, Defender, Exchange Server, Hyper-V, Secure Boot, and BitLocker.

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

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