Cisco Security Advisory – A malformed Internet Key Exchange (IKE) packet may cause a device running Cisco IOS Software to reload. Only Cisco 7200 Series and Cisco 7301 routers running Cisco IOS software with a VPN Acceleration Module 2+ (VAM2+) installed are affected. Cisco has released free software updates that address this vulnerability.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/87598/cisco-sa-20100324-ipsec.txt
Source: https://packetstormsecurity.com/files/87598/Cisco-Security-Advisory-20100324-ipsec.html