CVE-2025-43235: 
macOS vulnerability analysis and mitigation

CVE-2025-43235 is a vulnerability discovered in Apple's macOS Sequoia operating system that was disclosed on July 29, 2025. The vulnerability affects Power Management functionality in macOS Sequoia versions prior to 15.6, where an application may be able to cause a denial-of-service condition. This security issue was reported by Dawuge of Shuffle Team (Apple Support).

The vulnerability stems from a memory handling issue in the Power Management component of macOS Sequoia. According to the CVSS 3.1 scoring, it has been assigned a medium severity rating of 5.5, with the vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H. The vulnerability requires local access and user interaction to be exploited, but does not require privileges. While it doesn't impact confidentiality or integrity, it has a high impact on availability (NIST NVD).

The primary impact of this vulnerability is the potential for an application to cause a denial-of-service condition in the system's Power Management component. This could affect system stability and availability, potentially leading to system disruptions or unexpected behavior related to power management functions (CIS Advisory).

Apple has addressed this vulnerability by improving memory handling in macOS Sequoia 15.6. Users are advised to update to macOS Sequoia 15.6 or later to protect against this vulnerability. The fix is included in the security update released on July 29, 2025 (Apple Support).