This vulnerability, identified as CVE-2026-43822, is a use-after-free issue (CWE-416) affecting various Apple OS platforms. It allows an application to trigger unexpected system termination due to improper memory management. The vulnerability has been addressed with improved memory management in specific patched OS versions listed by the vendor. The CVSS 3.1 vector indicates a network attack vector with low attack complexity, no privileges or user interaction required, and impacts confidentiality, integrity, and availability at a high level. No known exploits in the wild have been reported.

An attacker controlling an app could exploit this use-after-free vulnerability to cause unexpected system termination, potentially leading to denial of service and impacting system stability and availability. The CVSS score reflects critical severity with high impact on confidentiality, integrity, and availability.

The vulnerability is fixed in iOS 26.6, iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, and watchOS 26.6. Users and administrators should apply these official updates to remediate the issue. No additional mitigation steps are indicated beyond applying the vendor-provided patches.