Thomson SpeedTouch 510 ADSL Router with firmware GV8BAA3.270, and possibly earlier versions, generates predictable TCP Initial Sequence Numbers (ISNs), which allows remote attackers to spoof or hijack TCP connections.

The RgSecurity form in the HTTP server for the Thomson TCW690 cable modem running firmware 2.1 and software ST42.03.0a does not properly validate the password before performing changes, which allows remote attackers on the LAN to gain access via a direct POST request.

Cross-site scripting (XSS) vulnerability in Thomson SpeedTouch modems running firmware 5.3.2.6.0 allows remote attackers to inject arbitrary web script or HTML via the name parameter to the LocalNetwork page.

Thomson SpeedTouch modem running firmware 5.3.2.6.0 allows remote attackers to create users that cannot be deleted via scripting code in the "31" parameter in a NewUser function, which is not filtered by the modem when creating the account, but cannot be deleted by the administrator, possibly due to cleansing that occurs in the administrator interface.

Cross-site request forgery (CSRF) vulnerability in Thomson TWG87OUIR allows remote attackers to hijack the authentication of unspecified victims for requests that change passwords via the Password and PasswordReEnter parameters to goform/RgSecurity.