Tenda AC18 V15.03.05.19 was discovered to contain a stack overflow via the funcpara1 parameter in the formSetCfm function.
Tenda AC18 v15.03.05.19 is vulnerable to Buffer Overflow in the formSetPPTPServer function via the endIp parameter.
An issue was discovered on Tenda AC7 V15.03.06.44CN, AC9 V15.03.05.19(6318)CN, AC10 V15.03.06.23CN, AC15 V15.03.05.19CN, and AC18 V15.03.05.19(6318)CN devices. There is a buffer overflow vulnerability in the router's web server. While processing the ssid parameter for a POST request, the value is directly used in a sprintf call to a local variable placed on the stack, which overrides the return address of the function, causing a buffer overflow.