Apple Fixes Screen Sharing Vulnerability in Tahoe, Sequoia, and Sonoma

Apple has released a trio of macOS updates—macOS 26.6.1 Tahoe, macOS 15.7.9 Sequoia, and macOS 14.8.9 Sonoma—to address a vulnerability in Screen Sharing. The release notes say, “An attacker on the network may be able to authenticate to Screen Sharing without valid credentials.” In fact, Apple’s wording suggests to me that Screen Sharing is vulnerable to unauthenticated connections over the local network, not the Internet. Plus, Screen Sharing is turned off by default, so it seems likely that only Macs with it explicitly enabled would be vulnerable. You can check your status in System Settings > General > Sharing > Screen Sharing.