An input validation issue was addressed with improved input validation. This issue affected versions prior to macOS Mojave 10.14.

A cookie management issue was addressed with improved checks. This issue affected versions prior to iOS 11.4.1, macOS High Sierra 10.13.6, tvOS 11.4.1, watchOS 4.3.2, iTunes 12.8 for Windows, iCloud for Windows 7.6.

Multiple memory corruption issues were addressed with improved memory handling. This issue affected versions prior to macOS High Sierra 10.13.6.

An information disclosure issue was addressed by removing the vulnerable code. This issue affected versions prior to macOS High Sierra 10.13.6.

Multiple memory corruption issues were addressed with improved memory handling. This issue affected versions prior to macOS High Sierra 10.13.6.