Source: Vulnerabilities and Threat Research – Qualys Security Blog
Author: Diksha Ojha
URL: https://blog.qualys.com/vulnerabilities-threat-research/2025/12/09/microsoft-patch-tuesday-december-2025-security-update-review
ONE SENTENCE SUMMARY:
Microsoft Patch Tuesday December 2025 offers crucial security updates addressing 72 vulnerabilities, including critical zero-day and remote code execution risks.
MAIN POINTS:
- December update addresses 72 vulnerabilities, including 3 critical and 55 important-severity ones.
- Three zero-day vulnerabilities were fixed; one actively exploited, two publicly disclosed.
- Updates include 15 vulnerabilities in Microsoft Edge (Chromium-based).
- Patches cover Windows Hyper-V, Windows Defender Firewall Service, and more.
- Remote code execution vulnerabilities are deemed critical due to potential exploitation.
- Elevation of privilege flaws include use-after-free issues enabling SYSTEM privileges.
- CISA flagged CVE-2025-62221 for urgent patching due to active exploitation.
- New security prompts in PowerShell address script execution risks.
- Critical fixes include vulnerabilities in Microsoft Office and Outlook.
- Next Patch Tuesday scheduled for January 13, 2026.
TAKEAWAYS:
- Microsoft’s December updates are essential for robust security posture maintenance.
- Zero-day vulnerabilities require immediate attention to prevent exploitation.
- Elevation of privilege flaws pose significant risks if left unpatched.
- Regular updating ensures protection against critical remote code execution threats.
- Engage with ongoing webinars for best practices in vulnerability management.