macOS 13.4.1a Security Response Update Fixes, Issues, Notes

macOS 13.4.1a Security Response update

macOS Security Response 13.4.1 a

To install this rapid security update on your Mac proceed as follows:

• 1. Open System Settings and go for General -> Software Update.
• 2. macOS Security Response 13.4.1 (a) should show up.
• 3. Tap Apply Now.
• 4. Enter device password and be patient until the security fix is requested, downloaded and prepared.

Tip: you can switch between manual / automatic Security Response Updates in System Settings -> General -> Software Update -> Automatic updates and toggle the Install Security Responses and system files option On or Off!

macOS 13.4.1a Security Fix

Similar to iOS 16.5.1a, there is a single WebKit fix included in this security update that patches the following vulnerability:
“Processing web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.”

The issue has been fixed by adding ‘improved checks’!

More: details are available in the security content document of the macOS 13.4.1a update!

macOS 13.4.1a Issues

Problems encounter after or while applying this update are tracked here:

• 1. macOS Ventura 13.4.1a not available in System Settings?
  Fact: This update is not available for devices already updated to macOS Sonoma beta!

  Tip: Force quit System settings and reopen it!

• 2. macOS 13.4.1a stuck on preparing Security Response update status?
  Tip: Be patient. Update should continue soon.
• 3. To be updated! Contribute in the comments!

Have you installed macOS 13.4.1a on Mac? Do you encounter any problems or have any questions? Use the comments section!

Related: Frequently asked questions about macOS Security Response updates are available here.