- Firmware download website: https://www.tenda.com.cn/download/detail-2227.html
4G300 V1.01.42
The Tenda 4G300 V1.01.42 firmware has a stack overflow vulnerability in the sub_4260F0 function. The v2 variable receives the upfilen parameter from a POST request. However, since the user can control the input of upfilen , the statement can cause a buffer overflow. The user-provided upfilen can exceed the capacity of the v20 array, triggering this security vulnerability.
