Apple today released iOS 17.4.1 and iPadOS 17.4.1, minor updates to the iOS 17 and iPadOS 17 operating systems.
According to Apple's release notes, the iOS 17.4.1 update includes important security updates and bug fixes.
Apple Releases iOS 17.4.1 and iPadOS 17.4.1 With Bug Fixes and Security Improvements - MacRumors
Apple security releases – Apple Support (UK)