Cisco FMC Flaws Exploited to Steal Credentials and Deploy Qilin Ransomware

Cisco disclosed that three ransomware and state-sponsored threat actor clusters exploited two critical vulnerabilities in its Secure Firewall Management Center, enabling credential theft and deployment of ransomware including variants linked to Russian state-sponsored groups.

This Wire brief sits within Fusion42's coverage of Cybersecurity and Security Infrastructure, and 3 sources have reported it between 10 Sep 2026 and 12 Sep 2026.