T&W WIFI Repeater BE126 allows remote authenticated users to execute arbitrary code via shell metacharacters in the user parameter to cgi-bin/webupg.
- http://packetstormsecurity.com/files/143978/Wireless-Repeater-BE126-Remote-Code-Execution.html
- https://www.exploit-db.com/exploits/42608/
No PoCs found on GitHub currently.