Macos Big Sur 11.5.1 (20g80) Instant

: This security fix was released simultaneously with iOS 14.7.1 and iPadOS 14.7.1 to address the same vulnerability. macOS 11.5.1 - Apple Wiki | Fandom

: An application could potentially execute arbitrary code with kernel privileges. macOS Big Sur 11.5.1 (20G80)

: Fixed an issue where the play count or last played date might not update in the library. : This security fix was released simultaneously with iOS 14

: This was a "surprise" security patch released just five days after version 11.5. macOS Big Sur 11.5.1 (20G80)

: Despite being a single-patch update, the download size was approximately 2.2 GB for Intel Macs and over 3.1 GB for M1 Macs . Improvements from the 11.5 Branch