An input validation issue was addressed with improved memory handling. This issue is fixed in iOS 12.3, macOS Mojave 10.14.5, tvOS 12.3, watchOS 5.2.1, iTunes for Windows 12.9.5, iCloud for Windows 7.12. An application may be able to gain elevated privileges.
https://support.apple.com/HT210212
https://support.apple.com/HT210125
https://support.apple.com/HT210124
https://support.apple.com/HT210122
https://support.apple.com/HT210120
https://support.apple.com/HT210119
https://support.apple.com/HT210118
https://research.checkpoint.com/2019/select-code_execution-from-using-sqlite/