Overview
- Apple released point updates for macOS Tahoe, Sequoia and Sonoma that install the same single security fix in macOS Tahoe 26.6.1 (25G76), Sequoia 15.7.9 (24G830) and Sonoma 14.8.9 (23J631).
- The patches close CVE-2026-65400, an authentication bug in Screen Sharing that could allow an attacker on the same network to authenticate without valid credentials and gain remote view or control depending on system settings.
- Apple published the security note and credited researcher Alfredo Pesoli via Bynario Atlas for reporting the issue, and multiple outlets recommend users install the updates promptly.
- The updates were issued without developer or public betas, reflecting Apple’s move to push urgent fixes outside the normal release cadence, and users can install them via System Settings > General > Software Update.
- While Apple and reporters say there is no public evidence the flaw was exploited, the potential to view screens, open apps or access files makes this a high‑priority security patch for Mac users and administrators.