Microsoft's June security update, known as Patch Tuesday, is the company's largest ever, with fixes for more than 200 bugs—three of which are zero-days that have been publicly disclosed.

Today is Microsoft's June 2026 Patch Tuesday, with security updates for 200 flaws and three publicly disclosed zero-day vulnerabilities.

Today is Microsoft's June 2026 Patch Tuesday, with security updates for 200 flaws, including five publicly disclosed zero-day vulnerabilities and one actively exploited in attacks.