A buffer overflow vulnerability was addressed by improving size validation in multiple Apple operating systems. The issue could cause unexpected process termination when opening a maliciously crafted file. The vulnerability is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, and visionOS 27.