N302r Plus Firmware

Critical remote buffer overflow vulnerability in TOTOLINK N302R Plus routers up to version 3.4.0-B20201028, affecting the HTTP POST request handler in the /boafrm/formFilter endpoint. An authenticated attacker can remotely exploit this vulnerability by manipulating the 'url' parameter to achieve buffer overflow, resulting in complete compromise of confidentiality, integrity, and availability (CIA triad fully compromised). The vulnerability has public exploit disclosure and represents an active real-world threat to deployed TOTOLINK router infrastructure.

A critical buffer overflow vulnerability exists in TOTOLINK N302R Plus router firmware (versions up to 3.4.0-B20201028) in the HTTP POST request handler for the /boafrm/formPortFw endpoint. An authenticated remote attacker can exploit this by manipulating the 'service_type' parameter to cause buffer overflow, achieving remote code execution with high confidentiality, integrity, and availability impact. Public exploit code is available and the vulnerability shows strong indicators of active exploitation risk.