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- Aug 17, 2014
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macOS Big Sur 11.6 - This update is recommended for all users and improves the security of macOS.
What's new in the updates for macOS Big Sur
macOS Big Sur updates improve the stability, performance, or compatibility of your Mac and are recommended for all macOS Big Sur users.
macOS Big Sur 11.6
Released September 13, 2021
CoreGraphics
Available for: macOS Big Sur
Impact: Processing a maliciously crafted PDF may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.
Description: An integer overflow was addressed with improved input validation.
CVE-2021-30860: The Citizen Lab
WebKit
Available for: macOS Big Sur
Impact: Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.
Description: A use after free issue was addressed with improved memory management.
CVE-2021-30858: an anonymous researcher
About the security content of macOS Big Sur 11.6
This document describes the security content of macOS Big Sur 11.6.