Some Older Apple Devices Face Unfixable Hardware Flaws
The flaw affects models with A12 and A13 processors, including the iPhone XS, XR, and 11 series, along with several iPad models
Security researchers have identified a serious vulnerability in certain older iPhones, iPads, and Apple Watches that cannot be fixed through software updates. The issue stems from a low-level hardware problem in the USB controller and BootROM code on specific chips, leaving millions of devices potentially exposed to physical attacks.
The flaw, known as usbliter8, affects models with A12 and A13 processors, including the iPhone XS, XR, and 11 series, along with several iPad models from around the same era. It also impacts some Apple Watch Series 4 and 5 devices and the HomePod mini. When attackers have physical access to the device, such as connecting it via USB in recovery mode, they can exploit it, potentially accessing sensitive information. Once successful, they could run unauthorized code and gain full control before the operating system even loads.
Apple was notified in advance and coordinated disclosure with the researchers from Paradigm Shift. Because the vulnerable code is burned into the hardware itself, no iOS update can patch it. Users of affected devices are encouraged to consider upgrading to newer hardware for better long-term protection. For everyday owners, the practical threat remains that the device falls into the wrong hands.
This situation serves as a reminder that even leading technology companies face limits when hardware-level problems arise. It underscores the value of building systems with durability in mind and the practical importance of staying current with devices that handle personal and business information. In a world of constant digital connections, careful choices about what we rely on help maintain control over our own security.
Sources / More reading
- Cybernews: Older iPads and iPhones vulnerable to unpatchable USB exploit
https://cybernews.com/security/millions-older-iphones-ipads-have-unfixable-flaw/
- ZDNET: Older iPhones have an unfixable security flaw
https://www.zdnet.com/article/older-apple-iphones-unpatchable-security-flaw/
- Gizmochina: Unpatchable vulnerability discovered on several older iPhones, iPads
- PCMag: Numerous Older Apple Devices Hit With 'Unpatchable' Bug