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Microsoft June 2026 Patch Tuesday fixes 6 zero-days, 200 flaws

Microsoft's June 2026 Patch Tuesday addresses 200 vulnerabilities including six zero-days. One zero-day is actively exploited in the wild; the other five are publicly disclosed. Affected systems span Windows components with RCE and privilege escalation flaws.

CRITICALAdvisoryJun 12, 2026
Action required
Prioritize patching all Windows systems immediately, focusing first on systems exposed to untrusted networks. Monitor for exploitation attempts targeting the actively exploited zero-day and scan for signs of lateral movement.
Affected products
Windows Collaborative Translation FrameworkHTTP.sysMicrosoft EdgeChromiumMicrosoft Copilot
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