CVE-2025-43197: 
macOS vulnerability analysis and mitigation

CVE-2025-43197 is a security vulnerability affecting Apple's macOS operating systems that was disclosed on July 29, 2025. The vulnerability exists in the Single Sign-On component where an app may be able to access sensitive user data. This issue affects multiple versions of macOS including Sequoia 15.6, Sonoma 14.7.7, and Ventura 13.7.7 (Apple Support, Apple Support, Apple Support).

The vulnerability stems from insufficient entitlement checks in the Single Sign-On component. According to the National Vulnerability Database, this vulnerability has been assigned a CVSS 3.1 Base Score of 4.0 (MEDIUM) with the vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N. The vulnerability is classified under CWE-863 (Incorrect Authorization) (NVD).

The primary impact of this vulnerability is that a malicious application may be able to access sensitive user data. The vulnerability allows unauthorized access to protected information, potentially compromising user privacy (Apple Support).

Apple has addressed this vulnerability by implementing additional entitlement checks in the security updates released for affected operating systems. The fix is available in macOS Sequoia 15.6, macOS Sonoma 14.7.7, and macOS Ventura 13.7.7. Users are advised to update their systems to these versions to mitigate the vulnerability (Apple Support).

The vulnerability was discovered and reported by Shang-De Jiang and Kazma Ye of CyCraft Technology (Apple Support).