CVE-2026-64738

9.8

Apple · macOS, iOS, iPadOS

A sandbox escape vulnerability in Apple macOS, iOS, and iPadOS allows a malicious application to bypass system restrictions and potentially achieve full system compromise.

Executive summary

A critical sandbox escape vulnerability in Apple operating systems allows unauthenticated applications to bypass security boundaries, posing a severe risk of unauthorized system access.

Vulnerability

The vulnerability is a permissions issue that allows a malicious application to break out of its intended sandbox. This flaw enables an unauthenticated attacker to bypass established security restrictions, leading to potential full system compromise.

Business impact

The potential for a sandbox escape represents a critical threat to organizational data security and system integrity. Because the vulnerability allows an application to bypass operating system security controls, a successful exploit could result in unauthorized data exfiltration, execution of arbitrary code with elevated privileges, and complete system takeover. With a CVSS score of 9.8, this vulnerability is categorized as critical, necessitating immediate attention to prevent widespread impact across the enterprise fleet.

Remediation

Immediate Action: Update all affected Apple devices to iOS/iPadOS 18.7.10, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, or macOS Tahoe 26.6 immediately.

Proactive Monitoring: Review system and application logs for unusual sandbox violation events or unexpected elevated process activity.

Compensating Controls: Implement robust Endpoint Detection and Response (EDR) solutions to identify and block malicious application behaviors associated with sandbox breakout attempts.

Exploitation status

Public Exploit Available: No (exploit_available: unknown)

Analyst recommendation

Given the critical CVSS score of 9.8 and the fundamental nature of sandbox escape vulnerabilities, the risk to organizational security is extreme. Administrators must prioritize the deployment of the provided vendor patches across all managed macOS, iOS, and iPadOS devices. Failure to remediate this vulnerability may leave systems exposed to persistent threats that can bypass standard security controls.

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Sources