macOS Sonoma 14.8.9 Security Update

What macOS Sonoma 14.8.9 Fixes

macOS Sonoma 14.8.9, released August 6, 2026, fixes 1 vulnerability in 1 part of the system, according to Apple's security advisory.

Apple does not say that any of them were exploited before the fix. That makes macOS Sonoma 14.8.9 a routine security update: worth installing soon, not an emergency.

It is the newest security release for macOS Sonoma on Apple's list.

Grouped by us from the impact Apple gives for each fix; the impact lines below are Apple's own.

Which Devices Get macOS Sonoma 14.8.9

Apple lists macOS Sonoma 14.8.9 for: macOS Sonoma.

How to Install macOS Sonoma 14.8.9

On the Mac, open System Settings → General → Software Update. Macs that cannot run the newest macOS are offered the update for their own version there.

Security fixes are cumulative: any later release for the same version includes these as well, so if you are already past macOS Sonoma 14.8.9 there is nothing to do.

Every Fix in macOS Sonoma 14.8.9

All 1 CVE in Apple's advisory, the most serious kinds first. Each entry is the part of the system affected, Apple's description of the impact and the fix, and the CVE ID.

• Screen Sharing

  An attacker on the network may be able to authenticate to Screen Sharing without valid credentials

  An authentication issue was addressed with improved state management.

  CVE-2026-65400

macOS Sonoma Security Release History

macOS Sonoma 14.8.9 in context: the security releases Apple has published for macOS Sonoma, newest first, with the number of fixes each carried.

The Same Fixes Elsewhere

Apple ships most fixes to every platform that shares the code, and to older versions still under support. These releases close at least one of the same CVEs:

Frequently Asked Questions