Macos Big Sur | 11.5.1 (20g80)

: This was a "surprise" security patch released just five days after version 11.5.

: 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 macOS Big Sur 11.5.1 (20G80)

: Apple stated they were aware of reports that this issue may have been actively exploited in the wild. : This was a "surprise" security patch released

Released on July 26, 2021, is a maintenance update primarily focused on a critical security patch. Key Update Details macOS Big Sur 11.5.1 (20G80)

: Addresses a serious vulnerability in the IOMobileFrameBuffer .

: An application could potentially execute arbitrary code with kernel privileges.

: Fixed an issue where the play count or last played date might not update in the library.