Today, Apple began rolling out iOS 14.4.2, iPadOS 14.4.2, and watchOS 7.3.3, and the company issued an advisory to users to upgrade as soon as possible. Like iOS/iPadOS 14.4.1 before it, this update addresses a security flaw.
Additionally, Apple released a similar security update—12.5.2—for older devices like the iPhone 5S or 6 that cannot run iOS 14.
The release notes for iOS 14.4.2 and iPadOS 14.4.2 are minimal, simply stating:
All Rights Of This Article Reserved To Ars Technica