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Cisco Firewall Manager Hacked by Sandworm Espionage Implant and Qilin Ransomware
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Fusion42 · 12 September 2026 · Fusion42 review
Cisco Secure Firewall Management Center (FMC) has been exploited through two critical vulnerabilities by at least three separate attacker clusters, including Russian GRU-linked Sandworm and Qilin ransomware affiliates, with a mandatory patch deadline set by CISA for federal agencies.
This Wire brief sits within Fusion42's coverage of Cybersecurity, and 3 sources have reported it between 10 Sep 2026 and 12 Sep 2026.
◆ ◆ The Wire takeaway
Your enterprise network perimeter just became a target rather than a barrier. You need to confirm your Cisco FMC patch status now or risk full firewall fleet compromise through a single console breach.
◆ Coverage
3 sources · first reported 10 Sep 2026 · latest 12 Sep 2026
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