An Authentication Bypass vulnerability in Belkin N300 (F7D7301v1) router allows remote attackers to bypass authentication using "Javascript debugging."
https://www.ise.io/research/studies-and-papers/belkin_n900/
https://euvd.enisa.europa.eu/vulnerability/EUVD-2013-3029
http://securityevaluators.com/knowledge/case_studies/routers/belkin_n900.php
http://securityevaluators.com/knowledge/case_studies/routers/Vulnerability_Catalog.pdf