iOS 26.0.1 and iOS 18.7.1 Urgent Update Fixes FontParser Memory Flaw
On September 29, 2025, Apple released security updates iOS 26.0.1 and iOS 18.7.1, accompanied by a warning urging all iPhone users to install them immediately. These updates resolve a serious vulnerability in the FontParser component—a system module responsible for processing font files—that, if exploited, could lead to application crashes or memory corruption. The flaw is tracked under CVE-2025-43400, and while Apple has not detailed every technical aspect publicly, their security writeup confirms that the patch improves bounds checking to block out-of-bounds writes. The updates span iPhones, iPads, macOS versions, and visionOS, reflecting the shared codebase underlying Apple’s operating systems. Given … Read more