Double-Take 5.0.0.2865 and earlier, distributed under the HP StorageWorks Storage Mirroring name and other names, allows remote attackers to cause a denial of service (CPU consumption) via a -1 value in the field that specifies the size of the vector<T> value.
http://www.vupen.com/english/advisories/2008/0666
http://www.securityfocus.com/bid/27951
http://www.securityfocus.com/archive/1/488632/100/0/threaded
http://securityreason.com/securityalert/3698
http://secunia.com/advisories/29075