The Autonomic Networking Infrastructure (ANI) implementation in Cisco IOS 12.2 12.4 15.0 15.2 15.3 and 15.4 and IOS XE 3.10.xS through 3.13.xS before 3.13.1S allows remote attackers to cause a denial of service (device reload) via spoofed AN messages aka Bug ID CSCup62315.