An out-of-bounds write vulnerability in Apple operating systems was fixed by improved bounds checking. The flaw could lead to memory corruption when processing a maliciously crafted 3D model. The issue is addressed in iOS 26.7 and later, iPadOS 26.7 and later, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, and watchOS 27.