The Belkin N300 (F7D7301v1) router allows remote attackers to bypass authentication and gain privileges via vectors related to incorrect validation of the HTTP Authorization header.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2013-3030
http://securityevaluators.com/knowledge/case_studies/routers/belkin_n900.php
http://securityevaluators.com/knowledge/case_studies/routers/Vulnerability_Catalog.pdf