Fortinet FortiOS is a set of security operating system dedicated to FortiGate network security platform from American Fita (Fortinet). The system provides users with firewall, antivirus, IPSec/SSLVPN, Web content filtering and anti-spam and other security features. Fortinet FortiOS suffers from a buffer overflow vulnerability that originates from a boundary error when an application processes untrusted input. An attacker could exploit the vulnerability to execute arbitrary code via specially crafted CLI commands.