Apple Updates Everything, (Mon, Sep 14th)
Source SANS ISC Handlers Diary
Rated by Threat Radar
Data as of 14 Sep 2026, 18:46 UTC
What to do
AI-suggested
Apple has released official updates that address all 261 vulnerabilities across its operating systems. Users should apply these updates promptly to ensure their devices are protected. Additionally, users should update security-relevant third-party applications such as Little Snitch and Objective-See BlockBlock before upgrading to macOS 27 to maintain compatibility and security. There are no indications that further immediate actions are required beyond applying the official patches.
Description
Apple released its annual update across all its operating systems on September 14, 2026, patching 261 vulnerabilities, the highest number ever patched by Apple in a single update. The update includes new features and bug-fix-only releases for multiple OS branches including iOS, iPadOS, macOS, tvOS, watchOS, and visionOS. None of the patched vulnerabilities are reported as exploited in the wild. Some users have experienced issues with iOS 27 installation, and certain security-relevant applications require updates prior to upgrading to macOS 27. The vulnerabilities affect various components such as kernel, WebKit, Spotlight, and others, with impacts ranging from information disclosure to potential privilege escalation and denial-of-service.