CVE-2026-43822

9.8

Apple · iOS, iPadOS, macOS, tvOS, visionOS, watchOS

A use after free memory management vulnerability in multiple Apple operating systems allows an application to cause unexpected system termination.

Executive summary

A critical use after free vulnerability across the Apple ecosystem allows for potential system-wide instability and service disruption.

Vulnerability

This vulnerability is a use after free flaw involving improper memory management, which can be triggered by an application to induce system termination. The CVSS vector indicates that this issue is exploitable remotely by an unauthenticated attacker with no required user interaction.

Business impact

The vulnerability carries a CVSS score of 9.8, reflecting its critical potential for service interruption. Successful exploitation allows an attacker to cause unexpected system termination, leading to potential data loss, operational downtime, and reduced system availability for mission-critical Apple devices.

Remediation

Immediate Action: Apply the latest security updates provided by Apple for iOS, iPadOS, macOS, tvOS, visionOS, and watchOS to reach the versions specified in the enrichment data.

Proactive Monitoring: Monitor system logs for repeated application crashes or unusual kernel-level restarts that may indicate attempted exploitation of memory management flaws.

Compensating Controls: Ensure that mobile device management policies restrict the installation of untrusted or unauthorized applications, as the vector requires an application to trigger the flaw.

Exploitation status

Public Exploit Available: No (exploit_available: false)

Analyst recommendation

Given the critical CVSS severity and the breadth of affected Apple platforms, organizations should prioritize the deployment of these patches across all managed endpoints. Immediate patching is the only effective way to eliminate the risk of system instability caused by this memory management defect.

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Sources