A high-severity race condition vulnerability in Apple macOS allows sandboxed processes to bypass security restrictions, posing a significant risk to system integrity.

This is a race condition vulnerability (CWE-362) within the macOS sandbox mechanism. It allows an unauthenticated, local attacker to execute a sandboxed process that can successfully circumvent sandbox restrictions to gain unauthorized access to system resources.

The ability for a sandboxed process to escape its environment undermines the fundamental security architecture of the operating system. With a CVSS score of 8.1, this vulnerability poses a high risk, as it could allow an attacker to escalate privileges or access sensitive data that should be protected by the sandbox. This could lead to full system compromise if the attacker successfully leverages the escape to perform unauthorized actions.

Immediate Action: Update all affected macOS installations to the patched versions: macOS Sonoma 14.8.5, macOS Sequoia 15.7.5, or macOS Tahoe 26.4.

Proactive Monitoring: Monitor system logs for unusual process activity or attempts by non-privileged applications to access restricted system directories.

Compensating Controls: Ensure that Endpoint Detection and Response (EDR) agents are updated to detect unauthorized system calls or suspicious process execution patterns associated with sandbox escapes.

Public Exploit Available: No (exploit_available: false).

Given the critical nature of sandbox integrity in modern operating systems, organizations should prioritize deploying these updates across their fleet immediately. Failure to patch allows local users or malicious applications to bypass critical security boundaries, significantly increasing the risk of data exfiltration or system compromise.