This script is Copyright (C) 1999-2016 Tenable Network Security, Inc.
The remote SMTP server has a buffer overflow vulnerability.
The remote host appears to be running NetManage Chameleon SMTPd.
This version of the software has a remote buffer overflow
vulnerability. Nessus crashed the service by issuing a long argument
to the HELP command. A remote attacker could exploit this issue to
crash the service, or possibly execute arbitrary code.
There is also a buffer overflow related to the HELO command, but
Nessus has not checked for this issue.
See also :
Upgrade to the latest version of this software.
Risk factor :
Critical / CVSS Base Score : 10.0
CVSS Temporal Score : 8.5
Public Exploit Available : false