Talk to a few of your trusted peers about the effect (not the mechanics) of the vulnerability.

As in, "If you hand me your iPhone, I can unlock it without knowing your password." Don't tell them how, just describe in 1 sentence what access you need, and what you're able to do. If your trusted peers (not drinking buddies who do other jobs) are impressed, then widen the circle a little - tell strangers (like HN readers) that same thing, and ask if it's a vulnerability.

It'll just help you have a sanity check about whether or not it's actually a vulnerability that Apple needs to fix, or perhaps it's someone else's, or not really that big of a deal.