In TrendNet TW100-S4W1CA 2.3.32, due to a lack of proper session controls, a threat actor could make unauthorized changes to an affected router via a specially crafted web page. If an authenticated user were to interact with a malicious web page it could allow for a complete takeover of the router.

In TrendNet TW100-S4W1CA 2.3.32, it is possible to inject arbitrary JavaScript into the router's web interface via the "echo" command.