CVE-2025-31278 is a high-severity memory corruption vulnerability affecting multiple Apple operating systems. It arises from improper memory handling when processing maliciously crafted web content. The issue has been fixed in several Apple OS versions including iPadOS 17.7.9, watchOS 11.6, visionOS 2.6, iOS 18.6, macOS Sequoia 15.6, and tvOS 18.6.