TL;DR

Interlock ransomware is actively exploiting CVE-2026-20131, a critical flaw in Cisco FMC software enabling unauthorized execution of Java code with root privileges.

What happened

['Interlock ransomware campaign discovered', 'Exploits unpatched vulnerability (CVE-2026-20131)', 'Targets enterprise firewalls']

Why it matters for ops

['Critical security flaw in firewall software', 'Allows remote execution of arbitrary Java code as root', 'Risks data exfiltration and ransomware attacks']

Mitigation

  • Apply Cisco patches for CVE-2026-20131
  • Disable unnecessary services and ports
  • Monitor logs for suspicious activity

Action items

  • Update firewall software immediately
  • Conduct a security audit of firewalls
  • Implement strict access controls

Detection IOCs

  • Java process anomalies on FMC devices
  • Unusual network traffic patterns

Source link

https://aws.amazon.com/blogs/security/amazon-threat-intelligence-teams-identify-interlock-ransomware-campaign-targeting-enterprise-firewalls/