Cross-site scripting (XSS) vulnerability in cgi-bin/webcm on the D-Link DSL-G604T router allows remote attackers to inject arbitrary web script or HTML via the var:category parameter, as demonstrated by a request for advanced/portforw.htm on the fwan page.

D-Link DSL-502T, DSL-504T, DSL-562T, and DSL-G604T, when /cgi-bin/firmwarecfg is executed, allows remote attackers to bypass authentication (1) if their IP address already exists in /var/tmp/fw_ip or (2) if their request is the first, which causes /var/tmp/fw_ip to be created and contain their IP address.

Directory traversal vulnerability in webcm in the D-Link DSL-G604T Wireless ADSL Router Modem allows remote attackers to read arbitrary files via an absolute path in the getpage parameter.