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.

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 BUTTONINPUT parameter to configdata.html, and (2) cause a denial of service (hard reset) via the "Reset All Defaults" value in the BUTTONINPUT parameter to configdata.html.

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.