CVE-2025-43311: 
macOS vulnerability analysis and mitigation

CVE-2025-43311 is a security vulnerability affecting multiple versions of macOS, including Sequoia 15.7, Sonoma 14.8, and Tahoe 26. The vulnerability was disclosed on September 15, 2025, and allows an application to potentially access protected user data through insufficient entitlement checks (Apple Support, NVD).

The vulnerability has been assigned a CVSS v3.1 base score of 5.1 (Medium), with the following vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N. This indicates a local attack vector with low attack complexity, requiring no privileges or user interaction. The vulnerability is classified as CWE-862 (Missing Authorization) and affects the Touch Bar component of macOS systems (AttackerKB).

The vulnerability allows a malicious application to bypass security controls and access protected user data. The impact is limited to confidentiality and integrity breaches, with no effect on system availability. The CVSS scoring indicates low impact on both confidentiality and integrity aspects of the system (AttackerKB).

Apple has addressed this vulnerability by implementing additional entitlement checks in the affected versions. Users are advised to update to macOS Sequoia 15.7, macOS Sonoma 14.8, or macOS Tahoe 26, depending on their system version. These updates contain the necessary security fixes to prevent unauthorized access to protected user data (Apple Support).