An out-of-bounds write vulnerability was fixed by improving bounds checking in multiple Apple operating systems including iOS, iPadOS, macOS, tvOS, and visionOS. The flaw could cause unexpected app termination when processing a maliciously crafted video file. The issue is resolved in versions iOS 26.7 and later, iPadOS 26.7 and later, macOS Golden Gate 27 and later, macOS Sequoia 15.8 and later, macOS Tahoe 26.7 and later, tvOS 27 and later, and visionOS 27 and later.