Tag Archives: ASA

September 2025 Zero-Day Vulnerabilities Affecting Cisco Software Cisco has reported that a sophisticated state-sponsored threat actor is actively exploiting multiple zero-day vulnerabilities in Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) software. Cisco identifies this as the same threat actor from a previous campaign they named ArcaneDoor. This threat actor primarily targets government networks worldwide for data exfiltration. …

The U.K. National Cyber Security Centre (NCSC) has revealed that threat actors have exploited the recently disclosed security flaws impacting Cisco firewalls as part of zero-day attacks to deliver previously undocumented malware families like RayInitiator and LINE VIPER. “The RayInitiator and LINE VIPER malware represent a significant evolution on that used in the previous campaign, both in sophistication and its …

Sep 25, 2025Ravie LakshmananZero-Day / Vulnerability Cisco is urging customers to patch two security flaws impacting the VPN web server of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software, which it said have been exploited in the wild. The zero-day vulnerabilities in question are listed below – CVE-2025-20333 (CVSS score: 9.9) – …