CVE-2016-6366

A buffer overflow vulnerability in Cisco ASA firewall devices allows authenticated users to send specially crafted network packets that can crash the device or execute malicious code. This is critical because firewalls protect entire networks, and compromising them gives attackers control over network traffic.

Remote authenticated attackers can trigger a buffer overflow in Cisco ASA SNMP processing by sending crafted IPv4 SNMP packets to affected devices (ASA 5500/5500-X, Services Module, 1000V, ASAv, Firepower 9300 ASA, PIX, FWSM running software through 9.4.2.3). Successful exploitation leads to arbitrary code execution with device privileges, requiring valid credentials for initial access.