Apple has released macOS 15.7.3 (24G419) and macOS 14.8.3 (23J220) today, and both updates are now available to everyone through Software Update. The releases arrived alongside the latest macOS Tahoe update, giving people on older macOS versions a fresh set of fixes without needing to upgrade right away.
If your Mac is already on macOS Sequoia or macOS Sonoma, this is a straightforward maintenance update. Apple frames both builds as security-focused releases that it recommends for all users.
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How to update macOS 15.7.3 or macOS 14.8.3
- Click Apple menu
- Open System Settings
- Select General
- Click Software Update
- Choose Update Now (or Restart Now when prompted)
Before you start, back up with Time Machine if you can, and keep your Mac plugged in during the install.
What’s included in these updates
- Security fixes across system components (Apple recommends installing both updates).
- AppleJPEG hardening to reduce the risk of memory corruption when processing a file.
- AppSandbox fixes to better protect user data from apps that try to reach beyond their permissions.
- AppleMobileFileIntegrity updates to tighten protections around sensitive data and execution rules.
Major changes
The big story here is security coverage, not new features. On macOS 15.7.3, Apple lists fixes that touch areas like FaceTime, Messages, Software Update, and the kernel, including patches for issues that could expose data or enable privilege escalation in certain scenarios.
Apple also calls out an Intel-related downgrade issue under AppleMobileFileIntegrity in the Sequoia notes, which it says it addressed by adding extra code-signing restrictions. That matters most for people still running Intel Macs and sticking with macOS 15 rather than moving to the newest major release.
On macOS 14.8.3, the listed changes follow the same theme: security fixes for core components, including AppleJPEG, AppSandbox, and AppleMobileFileIntegrity. If you rely on Sonoma for app compatibility or older hardware support, this update is the safest path forward without changing major versions.
If you have installed macOS 15.7.3 (24G419) or macOS 14.8.3 (23J220), let us know in the comments how the update went and if you noticed anything unusual after reboot.
Am I crazy or does full screen no longer go up to the top? I have hide menu bar in full screen only… It used to drop down overlapping the full screen window below. Now it seems that even though it is hidden, the menu bar space is still there. So if I move the cursor to the top, it does not overlap, but the window was never all the way to the top so it just drops down into the space it would have been anyway.
I see that behavior come and go on Sequoia 15.7.2. Not sure why or what causes it.