The D-Link DSL-2740B Gateway with firmware EU_1.0, when an active administrator session exists, allows remote attackers to bypass authentication and gain administrator access via a request to login.cgi.
packetstormsecurity.com/files/120613/dlinkdsl2740b-bypass.txt
securityadvisories.dlink.com/security/publication.aspx?name=SAP10004
www.webapp-security.com/2013/03/d-link-dsl-2740b-adsl-router-authentication-bypass
www.webapp-security.com/wp-content/uploads/2013/03/D-Link-DSL-2740B-ADSL-Router-Authentication-Bypass2.txt