3com OfficeConnect Remote 812 ADSL Router 1.1.7 does not properly clear memory from DHCP responses, which allows remote attackers to identify the contents of previous HTTP requests by sniffing DHCP packets.
https://exchange.xforce.ibmcloud.com/vulnerabilities/11999
http://www.securityfocus.com/bid/7592
http://nautopia.coolfreepages.com/vulnerabilidades/3com812_dhcp_leak.htm