TLDR Tech / InfoSec
macOS Screen Sharing Bug Handed Hackers Root, No Password
A critical pre-authentication flaw in macOS screensharingd (versions 26.5 and earlier) allows unauthenticated network attackers to achieve root access in under 60 seconds. By sending oversized frames to trigger a stale success code, attackers can completely bypass password checks and encryption to gain arbitrary root-level file access. Users must update to macOS 26.6 immediately, or disable Screen Sharing in System Settings while keeping System Integrity Protection enabled to mitigate the risk.
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