Re:macOS High Sierra: Anyone can login as “root” with empty ...
by yoz-y on Wednesday November 29, 2017 @11:26AM
(#15808022)
I thought it was confirmed that it is new to High Sierra, it was indeed lingering on forums as a "administrator hint" though.
I don't know much about this bug but I have seen several reports that the bug has actually existed quite some time and is not new, only the publicity surrounding it is now shining a bright light on it.