Microsoft Patches Actively Exploited Windows Zero-Day as Global Law Enforcement Dismantles Major Cybercrime Rings

In a critical 24-hour period ending November 13, 2025, the cybersecurity landscape was dominated by Microsoft's emergency patch for an actively exploited Windows Kernel zero-day (CVE-2025-62215) and a major international law enforcement action, 'Operation Endgame,' which dismantled the infrastructure of several malware-as-a-service operations. Other significant events include the discovery of an APT exploiting Cisco and Citrix zero-days, the introduction of a sweeping new cyber resilience bill in the UK, and CISA's addition of newly exploited vulnerabilities to its KEV catalog.