About the security content of macOS Mojave 10.14.6 Supplemental Update

This document describes the security content of macOS Mojave 10.14.6 Supplemental Update.

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macOS Mojave 10.14.6 Supplemental Update

Released 26 August 2019


Available for: macOS Mojave 10.14.6

Impact: A malicious application may be able to execute arbitrary code with system privileges

Description: A use after free issue was addressed with improved memory management.

CVE-2019-8605: Ned Williamson working with Google Project Zero

Additional recognition


We would like to acknowledge @Pwn20wnd, Ahmed Aldeab (@AldeabAhmed) for their assistance.

Entry updated 17 September 2019

Installing macOS Mojave 10.14.6 Supplemental Update updates the build number of macOS to 18G95. This build contains the security content described in this article. If you updated to macOS Mojave 10.14.6 and your macOS build is not 18G95, make sure that you also install the Supplemental Update.

Learn how to find the macOS version and build number on your Mac.

Learn how to update the software on your Mac.

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