Growatt ShineLan-X communication dongle has an undocumented backup account with undocumented credentials which allows significant level access to the device, such as allowing any attacker to access the Setting Center.
ShineLan-X contains a set of credentials for an FTP server was found within the firmware, allowing testers to establish an insecure FTP connection with the server.
The SWD debug interface on the Growatt ShineLan-X communication dongle is available by default, allowing an attacker to attain debug access to the device and to extracting secrets or domains from within the device