Apple patches iOS 26.0.1 for font flaw, begins iOS 26.1 beta

Apple released iOS 26 to the public in mid-September and has since moved quickly to refine the update, issuing an early security and bug-fix patch and rolling out developer betas for the first point release. The original iOS 26 update introduced a major visual redesign Apple calls Liquid Glass and added a new Preview app to iPhones. Since the rollout, Apple has issued iOS 26.0.1 to address stability problems and a font-related security flaw, and has begun testing iOS 26.1 developer betas that expand language support for Apple Intelligence and make further interface tweaks.

iOS 26.0.1, released after users reported a range of issues, includes a security fix for a font-processing vulnerability tracked as CVE-2025-43400. Security researchers have warned the flaw could be exploited by specially crafted fonts delivered via messages, email attachments, or web content to trigger memory corruption or application crashes. Apple patched the vulnerability in iOS 26.0.1 for iPhones and iPads and issued related updates for macOS. The patch also addresses reported bugs affecting recent iPhone 17 models, including unstable Wi-Fi and Bluetooth performance, intermittent cellular connectivity,...