This script is Copyright (C) 2003-2017 Tenable Network Security, Inc.
The remote SMTP server has a heap-based buffer overflow
According to its banner, the version of Exim running on the remote
host has a remote heap-based buffer overflow vulnerability. A remote,
unauthenticated attacker could potentially exploit this to execute
See also :
Upgrade to Exim 4.21 or later, or apply the appropriate patches.
Risk factor :
High / CVSS Base Score : 7.5
CVSS Temporal Score : 5.5
Public Exploit Available : false