CVE-2025-43355: 
macOS vulnerability analysis and mitigation

A type confusion vulnerability (CVE-2025-43355) was discovered in Apple's MobileStorageMounter component, affecting multiple Apple operating systems including iOS, iPadOS, macOS, tvOS, and watchOS. The vulnerability was discovered by Dawuge of Shuffle Team and was patched in September 2025 as part of Apple's security updates (Apple Support).

The vulnerability is a type confusion issue in the MobileStorageMounter component that was addressed with improved memory handling. This type of vulnerability typically occurs when a program accesses a resource using a type that is incompatible with what the resource actually is, potentially leading to memory corruption (Apple Support, Apple Support).

When exploited, the vulnerability could allow a malicious application to cause a denial-of-service condition on the affected system. This could potentially lead to system instability or unexpected application termination (Apple Support, Apple Support).

Apple has addressed this vulnerability by implementing improved memory handling in the affected component. Users are advised to update their devices to the latest available versions of their respective operating systems: iOS 18.7, iPadOS 18.7, macOS Tahoe 26, tvOS 26, or watchOS 26 (Apple Support, Apple Support).