H-ISAC TLP Green: Daily Cyber Headlines - December 5, 2025

Today’s Headlines:  

Leading Story

• CVE-2025-20387: A High-Severity Vulnerability on Splunk

Data Breaches & Data Leaks 

• Freedom Mobile Data Breach Exposes Personal Information of Customers
• Nova Ransomware Breach Exposes Brazil’s National Primary Health System 

Cyber Crimes & Incidents

• Threat Actors Leveraging Foxit PDF Reader to Gain System Control and Steal Sensitive Data
• Microsoft 365 License Verification Error Disrupts Desktop App Access

Vulnerabilities & Exploits  

• Critical King Addons Vulnerability Exploited to Breach WordPress Sites

Trends & Reports

• New Report Warns 68% of Actively Serving Phishing Kits Protected by CloudFlare
• 2025 Web Security Overhaul: Five Threats Redefining Cyber Risk

Privacy, Legal & Regulatory

• Virginia Contractors Accused of Wiping Government Databases After Employment Termination

Upcoming Health-ISAC Events

• Global Monthly Threat Brief   
  • Americas – December 16, 2025, 12:00-01:00 PM ET
  • European – December 17, 2025, 03:00-04:00 PM CET

View the detailed report below.