The anonymous replies seem to miss the point. Other platforms have had a spate of bugs which allow anyone to pick up a handset and bypass the lock screen, giving them somewhere between "full" and "pretty substantial" access to the device with no prior access or action required.
This flaw requires an attacker to persuade a user to install software and then, later, physically access the device and take advantage of the lock-screen bypass software they've installed. Doesn't seem in quite the same class to me?? As others have said, if you're in a position to be able to persuade the target to install software you could just persuade them to install software to access the data / feature you're interested in and forget about having to physically retrieve the handset later.
I'm not sure it counts as Raymond's airtight hatchway because it sounds like a local privilege escalation.