Directory traversal vulnerability in cgi-bin/webcm in D-Link DSL-G624T firmware 3.00B01T01.YA-C.20060616 allows remote attackers to read arbitrary files via a .. (dot dot) in the getpage parameter.
http://www.vupen.com/english/advisories/2006/4191
http://www.securityfocus.com/archive/1/449486/100/0/threaded