CVEs-PoC/2021/CVE-2021-27691.md

### [CVE-2021-27691](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-27691)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

Command Injection in Tenda G0 routers with firmware versions v15.11.0.6(9039)_CN and v15.11.0.5(5876)_CN , and Tenda G1 and G3 routers with firmware versions v15.11.0.17(9502)_CN or v15.11.0.16(9024)_CN allows remote attackers to execute arbitrary OS commands via a crafted action/setDebugCfg request. This occurs because the "formSetDebugCfg" function executes glibc's system function with untrusted input.

### POC

#### Reference
- https://hackmd.io/@aZYpdinUS2SD-yhAeHwOkw/rkhTCGzMd

#### Github
No PoCs found on GitHub currently.