Apple security advisory (AV26-823)
Brief
Serial number: AV26-823 Date: August 17, 2026
As of August 6, 2026, Apple is affected by vulnerabilities in the following products:
- macOS Tahoe
- Prior to 26.6.1
- macOS Sequoia
- Prior to 15.7.9
- macOS Sonoma
- Prior to 14.8.9
Open-source reporting indicates that CVE-2026-65400 is being exploited in the wild.
The Cyber Centre encourages users and administrators to review the provided web link and apply the necessary updates.
- About the security content of macOS Tahoe 26.6.1
- About the security content of macOS Sequoia 15.7.9
- About the security content of macOS Sonoma 14.8.9
- Apple security releases - Apple Support
Apple security advisory (AV26-823) - Canadian Centre for Cyber Security