Install this macOS Security Update Now!

If you have macOS High Sierra, install the available security update from the Updates tab in the App Store. This update fixes a vulnerability described on the page linked below:

Security Update 2017-001

About the security content of Security Update 2017-001

Available for: macOS High Sierra 10.13.1

Not impacted: macOS Sierra 10.12.6 and earlier

Impact: An attacker may be able to bypass administrator authentication without supplying the administrator’s password


Some users have reported an issue with file sharing after installing the Security Update linked above. If you’re one of them, don’t worry, Apple has posted a fix in this article:

Repair file sharing after Security Update 2017-001 for macOS High Sierra 10.13.1


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