New unpatchable exploit targets Apple devices with A12 and A13 chips

Researchers have published details of a BootROM vulnerability called usbliter8 that enables arbitrary code execution on devices running Apple's A12 and A13 chips — and because it lives in read-only boot memory, Apple cannot patch it with a software update. If you're still on an iPhone XS, XR, 11, or SE (2nd gen), this is the kind of thing worth knowing about, even if real-world exploitation requires physical access. It's a meaningful ownership consideration, not a reason to panic.