Tenda AC6(AC1200) v5.0 Firmware v02.03.01.114 and below contains a vulnerability which allows attackers to remove the Wi-Fi password and force the device into open security mode via a crafted packet sent to goform/setWizard.
https://drive.google.com/drive/folders/1L6ojSooP8sbZLQYRsAxlb0IWVAZef8Z7?usp=sharing