Cisco IronPort AsyncOS 9.1.2-023, 9.1.2-028, 9.1.2-036, 9.7.2-046, 9.7.2-047, 9.7.2-054, 10.0.0-124, and 10.0.0-125 on Email Security Appliance (ESA) devices, when Enrollment Client before 1.0.2-065 is installed, allows remote attackers to obtain root access via a connection to the testing/debugging interface, aka Bug ID CSCvb26017.
http://www.securitytracker.com/id/1036881
http://www.securityfocus.com/bid/93116
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160922-esa