Your macOS High Sierra is exposed to a serious threat as any hacker or cyber goon can log in as ‘root’. The bug is first noticed by a Turkish developer named Lemi Orhan Ergin, who tweeted to Apple: Dear @AppleSupport, we noticed a *HUGE* security issue at MacOS High Sierra. Anyone can login as “root” with empty password after clicking on login button several times. Are you aware of it @Apple? This bug allows root user to set a blank password on your unlocked Mac. And to avoid any such issue, you need to enable root user on Mac.

Thankfully, Apple quickly took action and responded Mac users with a solution: “We are working on a software update to address this issue. In the meantime, setting a root password prevents unauthorized access to your Mac. ,” an Apple spokesperson told iMore.

What damage root can cause on your Mac?

The attacker can enjoy super-user access to your Mac. As per Apple’s guidelines, the Root User is supposed to be disabled on macOS. If a stranger has got physical access to your Mac, s/he can enjoy full access to your Mac by entering ‘root’ and hitting the login button repeatedly. You need to make sure that nobody can get access to your Mac even through screen sharing, VNC, or remote desktop.

How to Enable Root User on Mac in macOS High Sierra

How to Enable Root User on Mac in macOS High Sierra

Step #1: ON your Mac, click on Apple logo from the top left corner of screen; this will bring down Apple menu and you need to select System Preferences from the drop-down list.

Click on Apple Logo from Menu bar on Mac and Go to System Preferences

Step #2: On System Preferences dialog box, click on Users and Groups.

click on Users and Groups from System Preferences in Mac

Step #3: Now click on Lock icon from bottom left corner of box.

Click on Lock icon

Step #4: You will be prompted to enter your username and admin password; enter the password and click on Unlock button.

Enter Mac Password to Unlock System Preferences

Step #5: Next, you need to click on Login Option from left navigation; and then click on Join button next to Network Account Server.

click Login Option and then click on Join Network Account Server

Step #6: Click on Open Directory Utility button.

Click on Open Directory Utility button

Step #7: Again, you need to click on Lock icon from the bottom left corner of the dialog box.

click on Lock icon to access to Directory Information

Step #8: You will be asked to enter your password again; type in your password and then click Modify Configuration button.

Enter Password and Click on Modify Configuration

Step #9: Click Edit from the menu bar and next, click on Enable Root User.

Click on Edit from Menu in Directory Utility

Click on Enable Root User Account on Mac

Step #10: At last, you have to enter and verify Root User Password. A strong password is recommended.

Enter and verify Root User Password on Mac

Alternatively, you can use command line to create Root User Password faster.

How to Create Root User Password on Mac via Terminal

Step #1: Open Terminal: Launch Spotlight Search → Type Terminal→ Open it.

Step #2: Here, type the command: sudo passwd -u root.

Open Terminal in Mac and Type sudo passwd -u root command

Step #3: Type in your Mac System password.

Enter Mac Password in Terminal

Step #4: Enter the password and then retype the password to confirm Root User Password.

Enter New Root User Password from Terminal in Mac

You must not disable the Root User as this will leave password field blank and the attacker gets access to your Mac.

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