In iOS before 11.4.1, watchOS before 4.3.2, tvOS before 11.4.1, Safari before 11.1.1, macOS High Sierra before 10.13.6, a spoofing issue existed in the handling of URLs. This issue was addressed with improved input validation.
In iOS before 11.3, tvOS before 11.3, watchOS before 4.3, and macOS before High Sierra 10.13.4, an information disclosure issue existed in the transition of program state. This issue was addressed with improved state handling.
In macOS High Sierra before 10.13.2, an access issue existed with privileged WiFi system configuration. This issue was addressed with additional restrictions.
In macOS High Sierra before 10.13.2, a logic issue existed in APFS when deleting keys during hibernation. This was addressed with improved state management.