Calif.io successfully demonstrated an untethered jailbreak for the iPhone 18 Pro at Hexacon in Paris, allowing root access after reboot.
Calif.io Unveils Groundbreaking Jailbreak at Hexacon
At the Hexacon security conference in Paris on October 16, Calif.io showcased a significant achievement by successfully demonstrating an untethered jailbreak on an iPhone 18 Pro running iOS 27.0.1. This marks a notable milestone as it is the first time an untethered jailbreak has been executed on such a device, allowing users to regain root access even after a reboot.
The untethered nature of this jailbreak means that it can restore itself without needing a computer connection, which is a critical feature for users seeking to bypass Apple's stringent software restrictions. Jailbreaking enables owners to install unapproved applications, customize the device interface, and utilize functionalities that Apple has not officially sanctioned.
During the demonstration, video evidence showed the team rebooting the device, unlocking it using the regular passcode, and accessing the system as root. This level of access is typically restricted and represents a significant breach of the security measures Apple has put in place.
Details on the Jailbreak
Despite the successful demonstration, Calif.io has not disclosed the specific vulnerabilities that facilitated this jailbreak, nor have they released a public tool for others to use. The firm stated that it plans to share more information in the future. Notably, Apple’s security notes for iOS 27 acknowledge Calif.io’s collaboration with Claude and Anthropic Research for identifying two unrelated system bugs.
Hexacon, which runs until October 17, serves as a platform for researchers to discuss and exploit security vulnerabilities in widely used technologies. The event's focus on offensive security aligns with the nature of Calif.io's demonstration, which challenges the robustness of Apple's defenses.
Potential Implications
The ability to jailbreak modern iPhones is a complex process that typically requires a series of exploits to bypass Apple's multiple layers of security, including hardware protections. The longevity of this jailbreak's effectiveness will depend on when Calif.io decides to publish the details of their method, as Apple is known to promptly patch vulnerabilities once they are made public.
As the tech community watches closely, the implications of this jailbreak extend beyond individual users, potentially impacting Apple’s security protocols and the broader landscape of mobile device security.
