macOS Big Sur 11.6 is out: Enhanced security for your Mac

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Mac users can update it again, whether you're running the latest version or still have the previous macOS version on your Mac. Updates have been released for both macOS Big Sur and macOS Catalina. Security improvements have been made in both releases, with macOS Big Sur 11.6 leading the way.

macOS Big Sur 11.6 available

Apple has been making rapid updates to macOS Big Sur over the past year released. After macOS Big Sur 11.5.2 last August, it's now the turn of macOS Big Sur 11.6. As in the previous versions, it is about enhanced security. The update is therefore recommended for all users. And for those who don't have a compatible Mac for macOS Big Sur, an additional security update 2021-005 for macOS Catalina is also available.

Releasenotes macOS Big Sur 11.6

This update is recommended for all users and improves the security of macOS.

For more information about the security aspects of this update, please see the following webpage: https://support.apple.com/kb/HT201222

Just like in iOS 14.8, Apple has improved security in macOS Big Sur 11.6. Fixed issues with CoreGraphics and WebKit, as stated on the support page:

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

Download macOS Big Sur 11.6
You downloads macOS Big Sur 11.6 through System Preferences, just like iOS. To download this update, do the following:

  1. Go to System Preferences.
  2. Click Software Update.
  3. The Mac will now automatically search for the latest version. Click Download and Install to download the update.

You can also adjust the settings to automatically search for the latest versions. You can read more about installing a macOS update in our article.

Note: keep the comments on-topic, concrete and clear for others. Personal status updates on whether your download has started/successfully adds nothing to the discussion. It may also take a little longer before the update is visible. You don't have to report this either. These comments will be deleted.