Apple fixed three Mac Screen Sharing flaws, and now it’s patching another one
Apple has patched another Mac Screen Sharing flaw less than two weeks after fixing three separate vulnerabilities in macOS 26.6, with the latest issue affecting authentication.
Apple patched three Screen Sharing vulnerabilities in macOS Tahoe 26.6.1 and is now addressing a fourth one, highlighting the importance of this update beyond its seemingly minor version number. The latest flaw allows an attacker on the same network to authenticate to Screen Sharing without valid credentials. Apple has also issued updates for macOS Sequoia and Sonoma.
Other Screen Sharing Server vulnerabilities include CVE-2026-43779, which could enable an app to intercept network connections intended for another process, CVE-2026-43777, which poses a remote denial-of-service risk, and CVE-2026-43760, allowing an app to access sensitive user data. While the latest issue is tied directly to authentication, the patch for macOS 26.6.1 is part of a series of fixes for Screen Sharing vulnerabilities across macOS generations.
Prompt installation of the update is recommended for users who utilize Screen Sharing or keep it enabled on Macs that frequently connect to shared networks.
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