Overview

• Apple issued visionOS 26.0.1 on September 29, 2025 with build number 23M341.
• The release fixes an out-of-bounds write in FontParser tracked as CVE-2025-43400.
• Apple warns that maliciously crafted fonts could cause app crashes or corrupt memory.
• The vulnerability is mitigated through improved bounds checking, and the update also includes routine stability fixes.
• Users should install via Settings > General > Software Update and confirm build 23M341 after reboot.