ShellCodeX Intelligence Brief
CRITICAL
Cybersecurity
Cisco Secure Firewall ASA/FTD VPN flaw actively used to remotely crash devices
Source headline: Cisco warns of ASA and FTD VPN flaw exploited to crash devices
Threat level
Critical
Signal strength
75/100
Source confidence
1 source
Published
2 hours ago
Intelligence Summary
Cisco reports a high-severity denial-of-service weakness affecting Secure Firewall ASA and Threat Defense (FTD) VPN deployments. Attackers can exploit the flaw remotely to trigger device crashes. The issue is being observed in the wild, increasing the urgency for exposed networks. Successful exploitation may disrupt VPN availability and impact business operations. Cisco recommends reviewing affected versions and applying available mitigations or patches.
Recommended Action
Prioritize immediate review, validate exposure, and patch or mitigate affected systems.
Topics
Original reporting
BleepingComputer
Cisco warns of ASA and FTD VPN flaw exploited to crash devices
Open original source