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Older iPhones have an unfixable security flaw - why it can't be patched and the models affected

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Why This Matters

The discovery of an unpatchable security flaw in older iPhones with A12 and A13 chips highlights the ongoing challenges in device security, especially for devices that cannot be updated remotely. While the vulnerability requires physical access and doesn't compromise user data directly, it underscores the importance of hardware security and the risks posed by legacy devices in the tech industry. Consumers with older iPhones should remain cautious, as these vulnerabilities may be exploited if devices are physically accessed by malicious actors.

Key Takeaways

The notch at the top of an iPhone XS Max. Image: Maria Diaz / ZDNET

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ZDNET's key takeaways

A security flaw in certain iPhones leaves them vulnerable.

The flaw affects iPhones with an A12 or A13 processor.

The flaw is ROM-based, so Apple can't patch it with a security update.

Do you still use an iPhone 11, XS, XR, or SE? If so, I have some bad news. Yep, another security flaw has been discovered, and Apple can't fix this with one of its typical updates.

In a blog post published on Thursday, cybersecurity firm Paradigm Shift revealed a security vulnerability that it discovered and successfully exploited in older model iPhones with Apple's A12 or A13 chip. Dubbed usbliter8, the flaw affects the boot ROM, aka SecureROM, code of an iPhone, which executes before the operating system loads. By exploiting usbliter8, an attacker could install their own malicious code or run unauthorized commands on a victimized iPhone.

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Because the flaw is in the device's ROM, Apple can't patch it via a software update. The only saving grace is that the flaw can't be triggered remotely. An attacker would need physical access to your phone. They would also need enough time to restart your device and enough know-how to take advantage of the exploit.

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