The Smart Install feature in Cisco IOS 12.2, 15.0, 15.1, and 15.2 allows remote attackers to cause a denial of service (device reload) by sending a malformed Smart Install message over TCP, aka Bug ID CSCtt16051.
https://exchange.xforce.ibmcloud.com/vulnerabilities/74430
http://www.securitytracker.com/id?1026867
http://www.securityfocus.com/bid/52756
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120328-smartinstall