Advisory ID: cisco-sa-20120126-ironport
Cisco IronPort Email Security and IronPort Security Management Appliances contain a vulnerability that may allow a remote, unauthenticated attacker to execute arbitrary code with elevated privileges. Fixed software versions or patches are not yet available. Configuration workarounds that mitigate this vulnerability are available.
Cisco IronPort Email Security Appliance (C-Series and X-Series) versions prior to 7.6.0 and IronPort Security Management Appliance (M-Series) versions prior to 7.8.0 are affected by the FreeBSD telnetd remote code execution vulnerability documented by Common Vulnerabilities and Exposures (CVE) identifier CVE-2011-4862. This one scores a 19 out of 20 on the CVSS score (BASE & TEMPORAL), so you may want to exercise the workaround on this one.