This script is Copyright (C) 2005-2013 Tenable Network Security, Inc.
The remote FreeBSD host is missing a security-related update.
A Net-SNMP release announcement reports :
A security vulnerability has been found in Net-SNMP releases that
could allow a denial of service attack against Net-SNMP agent's which
have opened a stream based protocol (EG, TCP but not UDP; it should be
noted that Net-SNMP does not by default open a TCP port).
See also :
Update the affected package.
Risk factor :
Medium / CVSS Base Score : 5.0
CVSS Temporal Score : 3.7
Public Exploit Available : false