Tenda AC15 US_AC15V1.0BR_V15.03.05.20_multi_TDE01.bin is vulnerable to Buffer Overflow. The stack overflow vulnerability lies in the /goform/setpptpservercfg interface of the web. The sent post data startip and endip are copied to the stack using the sanf function, resulting in stack overflow. Similarly, this vulnerability can be used together with CVE-2021-44971
There is a command injection vulnerability at the /goform/setsambacfg interface of Tenda AC15 US_AC15V1.0BR_V15.03.05.20_multi_TDE01.bin device web, which can also cooperate with CVE-2021-44971 to cause unconditional arbitrary command execution
Multiple Tenda devices are affected by authentication bypass, such as AC15V1.0 Firmware V15.03.05.20_multi?AC5V1.0 Firmware V15.03.06.48_multi and so on. an attacker can obtain sensitive information, and even combine it with authenticated command injection to implement RCE.
goform/AdvSetLanip endpoint on Tenda AC15 AC1900 15.03.05.19 devices allows remote attackers to execute arbitrary system commands via shell metacharacters in the lanIp POST parameter.
The goform/setUsbUnload endpoint of Tenda AC15 AC1900 version 15.03.05.19 allows remote attackers to execute arbitrary system commands via the deviceName POST parameter.
A hard-coded telnet credential in the tenda_login binary of Tenda AC15 AC1900 version 15.03.05.19 allows unauthenticated remote attackers to start a telnetd service on the device.