A HomeKit vulnerability in the current version of iOS 11.2 has been demonstrated to 9to5Mac that allows unauthorized control of accessories including smart locks and garage door openers.
“Users need to take no action today to resolve the issue as the fix that is rolling out is server-side,” Apple says. “The future update to iOS coming next week will resolve any broken functionality.”
HomeKit is a framework that allows control of compatible home automation devices through iOS and Siri.
