Symantec Vulnerability Research: SYMSA-2006-002- There exists a format string vulnerability within the McAfee WebShield SMTP server which allows an attacker to execute arbitrary code on the host computer via an unauthenticated connection. With successful exploitation, an unauthenticated attacker is able to obtain SYSTEM access.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/45298/SYMSA-2006-002.txt
Source: https://packetstormsecurity.com/files/45298/SYMSA-2006-002.txt.html