WebKitGTK+ and WPE WebKit suffer from multiple memory corruption vulnerabilities that can lead to code execution. Multiple versions are affected.
Apple Security Advisory 2019-1-24-1 - iTunes 12.9.3 for Windows is now available and addresses code execution and cross site scripting vulnerabilities.
Apple Security Advisory 2019-1-22-6 - iCloud for Windows 7.10 is now available and addresses code execution and cross site scripting vulnerabilities.