The iOS 18.4, iPadOS 18.4, and macOS Sequoia 15.4 updates fix over 50 vulnerabilities.Fixes in iOS 18.4 and iPadOS 18.4 include issues related to keychain data, password autofill, and hidden photos.macOS Sequoia 15.4 update addresses over 120 vulnerabilities, including AirDrop, App Store, Doc, and Kernel.It is recommended to update to these versions to ensure protection against potential security risks.