CVE-2025-43193: 
macOS vulnerability analysis and mitigation

CVE-2025-43193 is a security vulnerability affecting Apple's macOS operating systems that was disclosed on July 29, 2025. The vulnerability exists in the SecurityAgent component and allows an application to cause a denial-of-service condition through improper memory handling. This issue affects multiple versions of macOS including Sequoia 15.6, Ventura 13.7.7, and Sonoma 14.7.7 (Apple Support, Apple Support, Apple Support).

The vulnerability stems from improper memory handling in the SecurityAgent component of macOS. The issue was assigned a CVSS 3.1 Base Score of 9.8 (CRITICAL) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. It has been classified under CWE-400 (Uncontrolled Resource Consumption) (NVD).

When exploited, this vulnerability allows a malicious application to cause a denial-of-service condition in the system. The high CVSS score indicates critical severity with potential for high impacts on confidentiality, integrity, and availability of the system (NVD).

Apple has addressed this vulnerability by improving memory handling in the SecurityAgent component. The fix is available in macOS Sequoia 15.6, macOS Ventura 13.7.7, and macOS Sonoma 14.7.7. Users are advised to update their systems to these versions to mitigate the vulnerability (Apple Support, Apple Support, Apple Support).

The vulnerability was discovered and reported by Dawuge of Shuffle Team (Apple Support).