Apple has released several updates for iPhones, iPads, Apple Watches, and Macs earlier today (May 24).  More details are available on the Apple Security Updates website. 

Security Update 2021-003 (macOS Catalina)

Security Update 2021-004 (macOS Mojave)

MacOS Big Sur 11.4

iOS and iPadOS 14.6

tvOS 14.6

watchOS 7.5