Interlock ransomware exploited Cisco firewall zero-day 36 days before disclosure
by Artem Safonov
Thirty-six days of zero-day access. Interlock ransomware hit Cisco Firewall Management Center via CVE-2026-20131 (CVSS 10.0) before anyone knew the flaw existed. A misconfigured server exposed their entire toolkit. CISA gave agencies three days to patch.
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