Interlock Ransomware's Exploitation of Cisco Firewall Vulnerabilities
In late 2025, the Interlock ransomware group exploited a critical vulnerability in Cisco's Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) devices, identified as CVE-2025-20333. This buffer overflow flaw allowed unauthenticated remote code execution, enabling attackers to gain full control over affected devices. The exploitation led to significant data breaches and operational disruptions across multiple organizations. Despite Cisco's prompt release of patches, many systems remained unpatched, leaving them vulnerable to attacks. ([techradar.com](https://www.techradar.com/pro/security/around-50-000-cisco-firewalls-are-vulnerable-to-attack-so-patch-now?utm_source=openai)) This incident underscores the persistent threat posed by ransomware groups targeting network infrastructure vulnerabilities. It highlights the critical importance of timely patch management and robust security practices to mitigate such risks.
Kill Chain
