Cisco Zero-Day Powers Interlock Ransomware

Interlock ransomware actively exploits a Cisco zero-day vulnerability, posing significant risks to cybersecurity. Amazon threat intelligence has detected an active campaign leveraging this zero-day in Cisco Secure Firewall Management Center (FMC). The vulnerability, identified by the CVE-2026-20131 identifier, has been assigned a critical 10.0 CVSS score, underscoring its potential impact. Other vulnerabilities, CVE-2026-0953 and CVE-2026-20963, also appear in relevant discussions, though the highest threat stems from the FMC exploitation.

Reports indicate that this exploitation enables attackers to gain unauthorized access, escalating the threat directly to enterprises relying on Cisco’s firewall management. This campaign highlights the urgency for organizations to update their cybersecurity defenses. As Interlock ransomware continues to adapt, security professionals must stay vigilant against evolving threats.

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Exploited in the Wild: Interlock Ransomware Weaponizes Critical 10.0 CVSS Cisco Zero-Day