Calif shows iPhone 18 Pro jailbreak that persists after a reboot

First reported by Cyber Security News at · Updated · 3 sources

The demonstration at Hexacon in Paris restored root access after restarting an iPhone running iOS 27.0.1, showing that the jailbreak was untethered. Calif has not released a tool or disclosed the vulnerabilities used, so the demonstration does not provide a publicly available way to reproduce it.

  • According to Cyber Security News, the demonstration took place on October 16, 2026.

Covered by 3 publishers within 7 hours of the first report.

Reporting3

Cyber Security News iOS 27.0.1 Untethered Jailbreak Demonstrated on iPhone 18 Pro · Guru Baran
RuntimeWire Calif demonstrates an untethered jailbreak on the iPhone 18 Pro · Ryan Merket
Decrypt Hackers Jailbreak iPhone 18 Pro on Stage, and It Survives a Reboot · Jose Antonio Lanz

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Topics AppleiPhone