Apple has released macOS Tahoe 26.6.1, a rapid security update that addresses a serious vulnerability in the built-in Screen Sharing feature. The update, which arrived on Thursday without any new features, is strongly recommended for all Mac users running the latest version of the operating system.
Screen Sharing allows users to view and control another Mac remotely over a local network or the internet. It is widely used for remote support, file access, troubleshooting, and managing multiple Macs in homes, schools, or businesses. Once connected, a remote user can see the desktop, open apps, transfer files, and control the keyboard and mouse as if sitting at the machine.
The vulnerability could allow an attacker on the same network to authenticate to Screen Sharing without valid credentials. Apple fixed the issue through improved state management. The company has not indicated whether the flaw was being actively exploited in the wild.The same Screen Sharing bug affects earlier macOS versions, so Apple also issued companion security updates: macOS Sequoia 15.7.9 and macOS Sonoma 14.8.9.
Mac users can install the update by going to System Settings > General > Software Update. No corresponding updates for iOS, iPadOS, or watchOS were released alongside this Mac-only security patch.
MacDailyNews Take: Given the potential for unauthorized remote access, installing macOS Tahoe 26.6.1 (or the relevant update for older systems) promptly is advised.
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