CVE-2025-43285: 
macOS vulnerability analysis and mitigation

CVE-2025-43285 is a permissions vulnerability discovered in Apple's macOS operating system that affects the AppSandbox component. The vulnerability was disclosed on September 15, 2025, and affects multiple versions of macOS including Sequoia 15.7, Sonoma 14.8, and Tahoe 26. The issue allows a malicious application to potentially access protected user data by exploiting a permissions control weakness (Apple Support, NVD).

The vulnerability is classified as a permissions control issue in the AppSandbox component of macOS. 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. The vulnerability requires local access and user interaction to exploit, but does not require privileges. While it has high impact on confidentiality, it does not affect integrity or availability. The weakness is categorized as CWE-284 (Improper Access Control) (AttackerKB).

The primary impact of this vulnerability is the potential unauthorized access to protected user data. A malicious application could bypass intended sandbox restrictions and access sensitive information that should be restricted. The vulnerability has high confidentiality impact but does not affect system integrity or availability (Apple Support).

Apple has addressed this vulnerability by implementing additional restrictions in the permissions system. The fix has been released in macOS Sequoia 15.7, macOS Sonoma 14.8, and macOS Tahoe 26. Users are advised to update their systems to these versions or later to mitigate the vulnerability (Apple Support, Hacker News).

The vulnerability was discovered and reported by security researchers Zhongquan Li (@Guluisacat) and Mickey Jin (@patch1t). The security community has noted this as part of a larger security update addressing multiple vulnerabilities in Apple's operating systems (Hacker News).