Microsoft's June 2026 Patch Tuesday, released on June 10, 2026, addressed 200 security vulnerabilities across Windows, Office, Azure, and related products—the largest single Patch Tuesday release in the programme's history, surpassing the previous record of 167 CVEs. The update includes fixes for three publicly disclosed zero-day vulnerabilities and 33 critical-severity flaws.

The June 2026 release patches vulnerabilities across all major Microsoft product families: Windows 11 and Windows Server, Microsoft Office, Exchange Server, .NET Framework, Azure services, Hyper-V, Remote Desktop Services, and HTTP.sys.

Of the 200 CVEs addressed, 33 are rated Critical, 166 are rated Important, and on...