Interlock Ransomware Exploited Cisco FMC Zero-Day for Six Weeks Before Patch: Amazon Reveals Full Attack Chain
Amazon Threat Intelligence has revealed that the Interlock ransomware group exploited CVE-2026-20131—a critical CVSS 10.0 vulnerability in Cisco Secure Firewall Management Center—as a zero-day since January 26, 2026, more than five weeks before Cisco publicly disclosed the flaw on March 4. Why It Matters This case demonstrates the dangerous window between zero-day exploitation and vendor…
