CVE-2025-24229 is a logic flaw in the sandboxing implementation of Apple macOS that allows a sandboxed application to bypass intended restrictions and access sensitive user data. Sandboxing is a critical security control that isolates applications to prevent unauthorized access to system resources and user information. The vulnerability stems from inadequate validation checks within the sandbox enforcement logic, permitting an app confined by sandbox policies to escalate its access privileges improperly. This issue affects macOS versions prior to Sequoia 15.4, Sonoma 14.7.5, and Ventura 13.7.5, where Apple has addressed the problem by improving the sandbox checks. The CVSS v3.1 score of 7.4 reflects a high severity, with an attack vector over the network, high attack complexity, no privileges required, no user interaction needed, and a significant impact on confidentiality and integrity, but no impact on availability. The vulnerability is categorized under CWE-284 (Improper Access Control), indicating a failure to enforce correct access restrictions. Although no active exploits have been reported, the potential for sensitive data exposure is substantial, especially for environments running unpatched macOS versions. This flaw could be leveraged by malicious applications to extract private user information, undermining user privacy and organizational data security.

The primary impact of CVE-2025-24229 is the unauthorized disclosure of sensitive user data due to sandbox escape or bypass. This compromises confidentiality and integrity of user information, potentially exposing personal data, credentials, or other protected content. For organizations, this could lead to data breaches, loss of customer trust, regulatory penalties, and intellectual property theft. Since the vulnerability requires no privileges or user interaction, it can be exploited by any malicious app installed on the system, increasing the attack surface. The lack of availability impact means systems remain operational but compromised. Enterprises using macOS for critical operations, especially those handling sensitive or regulated data, face heightened risk. The vulnerability also undermines the trust model of the macOS sandbox, potentially enabling further exploitation chains. Although no exploits are currently known, the high severity and ease of exploitation make timely remediation essential to prevent future attacks.

1. Immediately apply the security updates provided by Apple in macOS Sequoia 15.4, Sonoma 14.7.5, and Ventura 13.7.5 or later versions to ensure the vulnerability is patched. 2. Restrict installation of applications to those from trusted sources, such as the Apple App Store or verified developers, to reduce the risk of malicious sandboxed apps. 3. Employ endpoint detection and response (EDR) solutions capable of monitoring for anomalous sandbox escape behaviors or unauthorized access attempts. 4. Implement strict application whitelisting policies and regularly audit installed software to identify and remove untrusted or unnecessary applications. 5. Educate users about the risks of installing unverified software and encourage adherence to organizational security policies. 6. Monitor system logs and security alerts for signs of exploitation attempts targeting sandbox mechanisms. 7. For high-security environments, consider additional sandboxing or containerization layers and limit user privileges to minimize potential damage from compromised apps. 8. Maintain an up-to-date inventory of macOS devices and ensure patch management processes are robust and timely.