CVE-2025-43314: 
macOS vulnerability analysis and mitigation

CVE-2025-43314 is a parsing issue in the handling of directory paths in Apple's macOS operating systems, discovered and reported by Mickey Jin (@patch1t). The vulnerability was disclosed on September 15, 2025, affecting multiple versions of macOS including Sequoia, Sonoma, and Tahoe. The issue has been fixed in macOS Sequoia 15.7, macOS Sonoma 14.8, and macOS Tahoe 26 (Apple Support, Apple Support, Apple Support).

The vulnerability is classified as CWE-22 (Improper Limitation of a Pathname to a Restricted Directory - 'Path Traversal'). It has been assigned a CVSS v3.1 base score of 5.5 (Medium) with the vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N. This indicates that the vulnerability requires local access and user interaction to exploit, requires no privileges, has high impact on confidentiality but no impact on integrity or availability (NVD, AttackerKB).

When successfully exploited, this vulnerability allows a malicious application to access sensitive user data. The vulnerability specifically affects the StorageKit component of macOS, potentially exposing user information to unauthorized access (Apple Support).

Apple has addressed this vulnerability by improving path validation in the affected systems. Users are advised to update to macOS Sequoia 15.7, macOS Sonoma 14.8, or macOS Tahoe 26, depending on their current version (Apple Support).