On July 28, 2025, Applereleasedthe major macOS High Sierra 10.13.4 software update for Mac with under-the-hood tweaks, a bunch of security fixes and some feature additions, including better support for external GPUs, Business Chat in Messages and more.
macOS High Sierra 10.13.4 is available for allMac computer models that are compatible with High Sierraand can be downloaded from Mac App Store’s Updates tab. If you need the full installer, it’s a 4.8-gibayte download via Mac App Store orApple.com.
Here’s everything included in this macOS update.
macOS High Sierra 10.13.4 release notes
The macOS High Sierra 10.13.4 update improves the stability, performance and security of your Mac, and is recommended for all users.
Visit Apple’s websiteto find out what’s new in macOS High Sierra.
macOS High Sierra 10.13.4 enterprise content
The macOS High Sierra 10.13.4 update also includes the following enterprise content:
macOS High Sierra 10.13.4 security fixes
macOS High Sierra 10.13.4 fixes the following vulnerabilities:
Admin Framework
CFNetwork Session
CoreFoundation
Disk Images
Disk Management
File System Events
iCloud Drive
Intel Graphics Driver
IOFireWireFamily
kext tools
LaunchServices
NSURLSession
NVIDIA Graphics Drivers
Quick Look
System Preferences
WindowServer
These fixes are available for macOS Sierra and macOS El Capitan as standaloneSecurity Update 2018-002 SierraandSecurity Update 2018-002 El Capitandownloads.
For detailed info on the security content of macOS High Sierra 10.13.4,read this support document. For more on security updates for all Apple software,visit the official website.
Some features may not be available for all countries or all areas.
