Executive brief
An app running on iOS, iPadOS, or visionOS can exploit insufficient entitlement validation to trigger a denial-of-service condition, causing the affected device to terminate unexpectedly. This impacts device availability and user experience, requiring a reboot to restore functionality.
Technical details
The vulnerability is a logic flaw in entitlement validation checks across Apple's operating systems. An unprivileged app can bypass or exploit missing entitlement controls to cause a denial-of-service condition—specifically unexpected process or system termination. The attack requires only the ability to install and run an app locally (no network or special privileges needed). Apple addressed this issue by implementing additional entitlement checks in iOS 26.7, iPadOS 26.7, iOS 27, iPadOS 27, and visionOS 27. The vulnerability was patched in September 2026.
Affected products
- Apple iOS before 26.7 and before 27
- Apple iPadOS before 26.7 and before 27
- Apple visionOS before 27
Timeline
- 2026-09-14: patched: Fixed in iOS 26.7, iPadOS 26.7, iOS 27, iPadOS 27, and visionOS 27
- 2026-09-14: disclosed: Published on Apple Security Release page