The HTTP interface in the Motorola SURFboard SB4200 Cable Modem allows remote attackers to cause a denial of service (device crash) via a request with MfcISAPICommand set to SecretProc and a long string in the Secret parameter.

Multiple cross-site request forgery (CSRF) vulnerabilities on Motorola Surfboard with software SB5100-2.3.3.0-SCM00-NOSH allow remote attackers to (1) cause a denial of service (device reboot) via the "Restart Cable Modem" value in the BUTTON_INPUT parameter to configdata.html, and (2) cause a denial of service (hard reset) via the "Reset All Defaults" value in the BUTTON_INPUT parameter to configdata.html.

Motorola Surfboard 4200 cable modem allows remote attackers to cause a denial of service (crash) by performing a SYN scan using a tool such as nmap.

Multiple directory traversal vulnerabilities in the web server for Motorola SURFBoard cable modem SBV6120E running firmware SBV6X2X-1.0.0.5-SCM-02-SHPC allow remote attackers to read arbitrary files via (1) "//" (multiple leading slash), (2) ../ (dot dot) sequences, and encoded dot dot sequences in a URL request.