This script is Copyright (C) 2000-2014 Tenable Network Security, Inc.
The remote SMTP server has a buffer overflow vulnerability.
The remote SMTP server is vulnerable to a buffer overflow attack. This
issue is triggered by issuing the 'HELO' command followed by a long
argument. A remote attacker could exploit this to crash the server, or
possibly execute arbitrary code.
Contact your vendor for a patch.
Risk factor :
High / CVSS Base Score : 7.5
CVSS Temporal Score : 7.5