https://www.theregister.co.uk/2017/12/07/apple_gets_around_to_patching_all_the_other_high_sierra_security_holes/

Apple has released a security update to address nearly two dozen vulnerabilities in macOS High Sierra.

The update comes little more than a week after Apple had to kick out an emergency fix to close up a glaring hole in macOS that allowed anyone with access to a Mac (either in person or remote) to bypass the login screen and act as a root account.