On Tenda AC1200 (Model AC6) 15.03.06.51_multi devices, the default settings for the router speed test contain links to download malware named elive or CNKI E-Learning.

On Tenda AC1200 (Model AC6) 15.03.06.51_multi devices, admin, support, user, and nobody have a password of 1234.

An exploitable command injection vulnerability exists in the /goform/WanParameterSetting functionality of Tenda AC9 Router AC1200 Smart Dual-Band Gigabit WiFi Route (AC9V1.0 Firmware V15.03.05.16multiTRU). A specially crafted HTTP POST request can cause a command injection in the DNS2 post parameters, resulting in code execution. An attacker can send HTTP POST request with command to trigger this vulnerability.

An exploitable command injection vulnerability exists in the /goform/WanParameterSetting functionality of Tenda AC9 Router AC1200 Smart Dual-Band Gigabit WiFi Route (AC9V1.0 Firmware V15.03.05.16multiTRU). A specially crafted HTTP POST request can cause a command injection in the DNS1 post parameters, resulting in code execution. An attacker can send HTTP POST request with command to trigger this vulnerability.