Apple today released Rapid Security Response (RSR) updates that are available for iPhone and iPad users running the iOS and iPadOS 16.5.1 updates and the macOS Ventura 13.4.1 update.
Rapid Security Response updates are designed to provide iOS and macOS users with security fixes without the need to install a full software update. Today’s updates address an actively exploited WebKit vulnerability, so it is a good idea to update as soon as possible.
iOS Security Response 16.5.1 is available through the standard Software Update mechanism in the iPhone or iPad Settings app, but is a quick update, requiring just a couple of minutes to download the update and then a quick restart for the install process. The macOS update can be installed through System Settings.
Read more at MacRumors.com