A major bug has been found in macOS High Sierra that could give unauthorized users full admin access to a Mac computer without needing a password to do so. The bug was discovered by developer Lemi Ergin, and it will allow anyone to log into the admin account of the computer using the username “root” and no password.

By using the bug anyone,

Source: Hot Hardware – MacOS High Sierra Bug Grants Admin Access Without A Password In Embarrassing Apple Security Gaffe