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MacRumors
Apple Pushes Emergency Mac Fix for Screen Sharing Flaw
Apple has rolled out a non-standard update, macOS Tahoe 26.6.1, to address a serious security flaw in the Screen Sharing feature. This vulnerability allowed attackers on the same Wi-Fi network to bypass authentication, raising significant security concerns. The update accompanies enhancements in macOS Sonoma and Sequoia, all aimed at addressing this issue. While Apple did not confirm any known exploitation prior to the patch, the rapid response indicates the potential severity of the flaw.
Act nowConfidence: HighImmediate horizon
Published 7 Aug 2026, 16:45 UTC1 min read
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Summary
TL;DR
- Emergency update released for macOS to fix a critical flaw.
- Vulnerability allowed unauthorized screen sharing access on shared networks.
- Update includes enhanced state management to address the issue.
- Available through System Settings ➜ Software Update.
- Co-released with macOS Sonoma 14.8.9 and Sequoia 15.7.9.
Interesting facts
- Apple's quick response indicates high seriousness about security vulnerabilities.
- Screen Sharing functions require user authentication which was compromised.
Coverage gaps