CRITICAL: CVE-2025-43510 affects six Apple platforms—watchOS, iOS, iPadOS, macOS, visionOS, and tvOS—via improper memory locking mechanisms that permit malicious applications to execute unauthorized modifications to inter-process shared memory. The vulnerability creates a direct privilege escalation vector where process isolation controls are circumvented at the kernel level, enabling code execution across trust boundaries without user interaction. Immediate patching is required across all affected device categories; exploitation likelihood is assessed as moderate-to-high given the low barrier to weaponization through trojanized applications in official distribution channels.