A directory traversal vulnerability exists in Linksys router's web interface (tested on the E1500 model firmware versions 1.0.00, 1.0.04, and 1.0.05), specifically in the /apply.cgi endpoint. Authenticated attackers can exploit the nextpage POST parameter to access arbitrary files outside the intended web root by injecting traversal sequences. This allows exposure of sensitive system files and configuration data.
A Command Injection vulnerability exists in the doupgradepost function of the httpd binary in Linksys E1500 v1.0.06.001. As a result, an authenticated attacker can execute OS commands with root privileges.