An unauthenticated remote attacker who tricks a user to upload a manipulated HTML file can get access to sensitive information on the device. This is a result of incorrect permission assignment for the web server.
An unauthenticated remote attacker can use firmware images to extract password hashes and brute force plaintext passwords of accounts with limited access.
An unauthenticated remote attacker may use hardcodes credentials to get access to the previously activated FTP Server with limited read and write privileges.
An unauthenticated remote attacker can perform a command injection via Modbus-TCP or Modbus-RTU to gain read and write access on the affected device.
An unauthenticated remote attacker can send a specially crafted Modbus read command to the device which leads to a denial of service.