In section Startups & Technology

Unpatchable Boot ROM flaw exposes older iPhone models

Barcelona-based cybersecurity firm Paradigm Shift has released technical details and a proof-of-concept for a vulnerability affecting Apple’s A12 and A13 chips. Dubbed "usbliter8," the flaw resides in the device's Boot ROM, meaning it cannot be fixed via software updates, potentially facilitating unauthorized access to hardware produced between 2018 and 2019.

Unpatchable Boot ROM flaw exposes older iPhone models

The vulnerability targets the initial code executed upon powering an iPhone, effectively undermining the device’s primary line of defense. By exploiting this flaw, which requires physical connection to the handset, researchers or malicious actors can bypass critical security checks. While the discovery is significant, it does not grant immediate access to user data; successful exploitation typically requires chaining this bug with additional vulnerabilities to achieve a full jailbreak.

Because the flaw exists in immutable hardware, the only definitive defense is hardware migration. The release of this information provides a rare look into the methods used by firms like Cellebrite and Magnet Forensics, which often develop proprietary tools to assist law enforcement. Historically, public jailbreaks served as a gateway for security research, but such releases have dwindled as researchers prioritize keeping valuable exploits private to avoid Apple’s patching cycles. Paradigm Shift has remained silent regarding the public disclosure of their findings.

Share:on TelegramXFacebook

Subscribe to our newsletter

Once a week — the best stories from our editors, no ads or push notifications. Delivered Sunday morning.

Comments (0)

Leave a comment

No comments yet. Be the first!