Macos Big Sur 11.5.1 (20g80) May 2026

: Available for all Macs compatible with Big Sur, including MacBook (2015+), MacBook Air (2013+), and iMac (2014+).

: Addresses a serious vulnerability in the IOMobileFrameBuffer . macOS Big Sur 11.5.1 (20G80)

: Users typically install this by going to System Preferences > Software Update . : Available for all Macs compatible with Big

: Resolved an issue where smart cards might not work correctly when logging into M1-based Macs. Installation & Compatibility including MacBook (2015+)