Apple has released its first Background Security Improvements update to fix a WebKit flaw tracked as CVE-2026-20643 on iPhones, iPads, and Macs without requiring a full operating system upgrade.

Apple updated iOS, macOS and iPadOS with a Background Security Improvements patch, the first time a new system has been used.

Apple has released a new background security update for iPhone, iPad, and Mac, delivering important behind-the-scenes protections and system-level improvements for users.