CVE-2025-43243 is a critical permissions vulnerability in macOS that allowed an application to modify protected parts of the file system. This issue was addressed by adding additional restrictions in macOS Sequoia 15.6, macOS Ventura 13.7.7, and macOS Sonoma 14.7.7. The vulnerability has a high CVSS score of 9.8, indicating severe impact on confidentiality, integrity, and availability if exploited.