In iCloud for Windows before 7.3, Safari before 11.0.3, iTunes before 12.7.3 for Windows, and iOS before 11.2.5, multiple memory corruption issues exist and were addressed with improved memory handling.

In iOS before 11.2.5, macOS High Sierra before 10.13.3, Security Update 2018-001 Sierra, and Security Update 2018-001 El Capitan, watchOS before 4.2.2, and tvOS before 11.2.5, a memory corruption issue exists and was addressed with improved memory ha