CVE-2025-43186

This vulnerability stems from CWE-119 (improper restriction on operations within memory buffer bounds), specifically a buffer overflow condition in file parsing routines shared across Apple's operating system ecosystem. The affected components span eight distinct Apple OS platforms, indicating a common parsing library or framework vulnerability in the core system services. Buffer overflows of this class typically occur when input validation fails to properly constrain data written to fixed-size memory buffers during file format interpretation, allowing attackers to overwrite adjacent memory regions. The CVSS vector indicates network-accessible attack surface (AV:N) with low complexity (AC:L), meaning the vulnerability can be triggered remotely without complex timing or environmental prerequisites. The complete absence of privilege requirements (PR:N) and user interaction requirements (UI:N) suggests the vulnerable parsing occurs automatically when processing network-delivered content, potentially through services like mail attachment processing, file sharing protocols, or browser download handlers.