I saw this on an another forum and thought it worth sharing just in case there are any Mac users on here.
Anyone with access to a Mac running the High Sierra Operating System can gain access by using the user name "Root" and leave the password blank.
https://www.theregister.co.uk/2017/1...s_high_sierra/
There is a fix here.
https://support.apple.com/en-us/HT208315