Apple on Thursday released macOS Tahoe 26.6.1, a surprise security update that fixes a potentially serious vulnerability in the operating system’s Screen Sharing feature. Why you should install macOS Tahoe 26.6.1 todayScreen Sharing is a macOS feature that lets you view and control another Mac remotely over a local network or the internet. So you can understand why Apple rushed out macOS Tahoe 26.6.1, even though closing this security hole is the only change it makes. That’s why Cupertino introduced security updates for older versions of macOS, including macOS Sequoia 15.7.9 and macOS Sonoma 14.8.9. How to install this updateMac users can install macOS Tahoe 26.6.1 by opening Settings > General > Software Update.