Fortinet has released a security advisory to highlight a vulnerability in versions of FortiGate firmware that were released before August 2012. Exploitation of this vulnerability could allow a remote attacker to take control of an affected system. Using unpatched software increases risks from viruses and other security threats, and attackers may target vulnerabilities for months or even years after patches are available.
US-CERT encourages users and administrators to review the Fortinet Advisory and apply the necessary update. See US-CERT Security Tip on Understanding Patches for more information.