Released on July 26, 2021, is a maintenance update primarily focused on a critical security patch. Key Update Details
: Available for all Macs compatible with Big Sur, including MacBook (2015+), MacBook Air (2013+), and iMac (2014+). macOS Big Sur 11.5.1 (20G80)
: An application could potentially execute arbitrary code with kernel privileges. Released on July 26, 2021, is a maintenance
: Fixed an issue where the play count or last played date might not update in the library. : Fixed an issue where the play count
: 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
: 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
While 11.5.1 was security-focused, it carries over the bug fixes introduced in 11.5 (20G71), including:
