If your Mac is still running macOS Sonoma or macOS Sequoia, the latest security updates aren’t optional. Apple released macOS Sonoma 14.8.8 and macOS Sequoia 15.7.8 on Monday, and together they patch nearly 140 security vulnerabilities.
Your Mac won’t gain any new features. But these maintenance updates are still important for anyone who has yet to update to macOS Tahoe. Apple fixed several WebKit flaws that could expose your data when browsing the web.
Why these macOS security updates matter
Security updates rarely come with flashy new features, but often stand out as the most important software Apple ships. The latest patches for macOS Sonoma and Sequoia close dozens of vulnerabilities, highlighting the hidden cost of staying on an older operating system: Apple might keep supporting legacy Macs, but attackers keep targeting them, too.
Apple’s release notes for Monday’s updates stick to boilerplate language, calling them “important security fixes” for anyone on older macOS versions. The build numbers match last week’s release candidates: macOS Sonoma lands as 14.8.8 (23J620), while macOS Sequoia arrives as 15.7.8 (24G824).
Apple published full security documentation on Monday detailing 138 distinct vulnerabilities patched across both versions. That’s a pretty hefty list for just another update, underscoring the breadth of threats that older macOS versions face.
Should you update if you’re skipping macOS Tahoe?
Apple usually gives the current macOS version and two prior releases active security patches without committing to a fixed timeline. While some Macs can’t upgrade to macOS Tahoe due to hardware limitations, some users decline to update due to the new operating system’s incompatibility with crucial business software or management tools.
Either way, staying on an older version of macOS doesn’t just mean you’re not safe from the latest threats — it means Apple must keep backporting fixes. For instance, a Safari 26.5.2 patch in June closed WebKit holes that could leak data across site boundaries or even crash the browser. This showed that both new and old macOS versions sometimes face identical browser-based threats.
How to update your Mac
To download Apple’s latest macOS security upgrades, follow these simple steps:
- Click the menu and head to System Settings > General > Software Update.
- Then wait for your Mac to detect the new version of the software for your system.
- Once it appears, click Update Now.
Before you start, make sure to plug in your machine and save your work, since your Mac will restart to finish installing the update.
With macOS 27 Golden Gate already in public beta, these Sonoma and Sequoia updates are likely near the end of Apple’s long-term support for the operating systems. If you are not planning to upgrade, make sure you install the latest update.
