A memory corruption issue was addressed with improved input validation. This issue is fixed in macOS Catalina 10.15 tvOS 12.3 watchOS 5.2.1 tvOS 13 macOS Catalina 10.15.1 Security Update 2019-001 and Security Update 2019-006 macOS Mojave 10.14.5 Security Update 2019-003 High Sierra Security Update 2019-003 Sierra iOS 12.3 iOS 13. Playing a malicious audio file may lead to arbitrary code execution.