Microsoft Patch Tuesday, December 2025 Security Update Review

Microsoft's December 2025 Patch Tuesday addresses 72 vulnerabilities including 3 critical and 55 important-severity issues. Three zero-day vulnerabilities were patched, with one being actively exploited and two publicly disclosed. Microsoft Edge (Chromium-based) received fixes for 15 vulnerabilities. This represents a significant security update addressing multiple high-impact vulnerabilities including actively exploited zero-days.