Temporary Workaround for Blocking Screen Sharing Exploit in macOS 26.5.2

[ghost]

Today, Apple released a serious update for all 3 supported macOS versions (Sonoma, Sequoia and Tahoe) that addresses an issue where screen sharing can be exploited even when disabled. To temporarily block access for those on 26.5.2 or older, do the following carefully or you won’t be able to root patch and build and install OpenCore.

Step 1. Launch Settings
Step 2: Go to Network
Step 3: Click Firewall
Step 4: Toggle on Block all Incoming Connections.
Step 5: Click the “+” button and select Applications.
Step 6: Select OpenCore
Step 7: Select the Ok button (or whatever it says)

I strongly recommended doing this on your Mac. For more information read this!

https://9to5mac.com/2026/08/06/apple-releases-security-updates-to-macos-tahoe-sequoia-and-sonoma/