macOS 13.4.1a Security Response Update Fixes, Issues, Notes

macos 13.4.1a security response update

macOS 13.4.1a Security Response update

macOS 13.4.1a Security Response has been released for all Macs running Ventura 13.4.1! It’s a tiny update, 139.9 MB, that brings security improvements without the need of a complete software update!

macOS Security Response 13.4.1 a

To install this rapid security update on your Mac proceed as follows:
macOS 13.4.1a security response download

  • 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

macos ventura 13.4.1a security content
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.