CVE-2024-40821: 
macOS vulnerability analysis and mitigation

CVE-2024-40821 is a security vulnerability affecting macOS operating systems that was disclosed on July 29, 2024. The vulnerability impacts macOS Sonoma 14.6, macOS Monterey 12.7.6, and macOS Ventura 13.6.8, where third party app extensions may not receive the correct sandbox restrictions (Apple Support, NVD).

The vulnerability is classified as an access issue in the Security component of macOS. It received a CVSS v3.1 base score of 7.1 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N from NVD, and a CVSS v3.1 base score of 8.4 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H from CISA-ADP. The issue was addressed by Apple through the implementation of additional sandbox restrictions (NVD).

The vulnerability could allow third party app extensions to operate without proper sandbox restrictions, potentially leading to unauthorized access to sensitive system resources or data. This could compromise the security boundaries established by macOS's sandbox system (Apple Support).

The vulnerability requires local access to the system and user interaction for exploitation according to the CVSS metrics. No public exploits have been reported at the time of disclosure (NVD).

Apple has released security updates to address this vulnerability in macOS Sonoma 14.6, macOS Monterey 12.7.6, and macOS Ventura 13.6.8. Users are advised to update their systems to these versions to receive the security fix (Apple Support).