CVE-2025-43398

Vulnerability

Details

CVE-2025-43398 is a memory handling vulnerability in Apple's core operating systems. The vulnerability stems from a memory handling issue in the kernel or system services. Improper memory management can be triggered by a malicious or compromised application, leading to a state that forces the system to unexpectedly terminate.

Exploitation

An attacker would need to have an app running on a vulnerable device. No additional privileges or network access are required beyond the ability to execute a crafted application. The attack surface is local, meaning an app installed on the device can directly trigger the condition.

Impact

Successful exploitation results in unexpected system termination, effectively causing a denial-of-service (DoS) condition. This can lead to data loss or interruption of critical services, as the device may restart or become temporarily unusable.

Mitigation

Apple has addressed this issue in the following software updates: iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Sequoia 15.7.2, macOS Sonoma 14.8.2, macOS Tahoe 26.1, tvOS 26.1, visionOS 7, visionOS 26.1, and watchOS 26.1 [1]. Users should update their devices to the latest available versions.