OS X Root Vulnerability – updating the OS X operating system on a Mac can bring back the vulnerability! http://bit.ly/2AUQGbu
Excerpt From the Linked Article
….multiple Mac users have confirmed to WIRED that Apple’s fix for that problem has a serious glitch of its own. Those who had not yet upgraded their operating system from the original version of High Sierra, 10.13.0, to the most recent version, 10.13.1, but had downloaded the patch, say the “root” bug reappears when they install the most recent macOS system update.