Sur 11.5.1 (20g80) - Macos Big

: Apple stated they were aware of reports that this issue may have been actively exploited in the wild.

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

While 11.5.1 was security-focused, it carries over the bug fixes introduced in 11.5 (20G71), including: 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 : Apple stated they were aware of reports

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

Released on July 26, 2021, is a maintenance update primarily focused on a critical security patch. Key Update Details : Despite being a single-patch update, the download

: Addresses a serious vulnerability in the IOMobileFrameBuffer .