The Integrated Management Controller (IMC) in Cisco Unified Computing System (UCS) 1.4(7h) and earlier on C-Series servers allows remote attackers to bypass intended access restrictions by sending crafted DHCP response packets on the local network, aka Bug ID CSCuf52876.
http://www.securitytracker.com/id/1031796
http://www.securityfocus.com/bid/85711
http://www.securityfocus.com/bid/72760
http://tools.cisco.com/security/center/viewAlert.x?alertId=37575
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2015-0633