An issue was discovered on TRENDnet TV-IP1314PI 5.5.3 200714 devices. Command injection can occur because the system function is used by davinci to unpack language packs without strict filtering of URL strings.
https://github.com/pcsle37/TRENDnet/blob/main/TRENDnet_vul.pdf
https://drive.google.com/file/d/1lTloBkH_7zAz1ZbFVSZnfpoPd81aPaHx/view?usp=sharing