CVE-2024-40833 is a logic flaw in Apple’s iOS and iPadOS shortcut functionality that allows a crafted shortcut to access sensitive user data without triggering the usual user consent prompts. This vulnerability stems from inadequate validation checks in the shortcut execution engine, permitting certain shortcut actions to bypass user interaction requirements. The issue affects iOS and iPadOS versions prior to 16.7.9, as well as macOS Monterey 12.7.6, macOS Sonoma 14.6, and macOS Ventura 13.6.8. The flaw enables an attacker with local access to execute a malicious shortcut that can silently extract sensitive information, compromising confidentiality. The CVSS 3.1 vector (AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N) indicates that exploitation requires local access but no privileges or user interaction, and results in a high confidentiality impact without affecting integrity or availability. Apple has fixed the issue by enhancing the logic checks governing shortcut actions to ensure user prompts are correctly enforced. No public exploits or active exploitation have been reported to date. This vulnerability is particularly concerning for environments where shortcuts are widely used for automation, as it undermines the trust model of user consent in data access.

The primary impact of CVE-2024-40833 is unauthorized disclosure of sensitive data on affected Apple devices. Since the vulnerability allows shortcuts to access data without user prompts, attackers can stealthily extract confidential information, potentially including personal data, credentials, or other sensitive content stored or accessible via shortcuts. This breach of confidentiality can lead to privacy violations, identity theft, or corporate espionage. The lack of integrity or availability impact means the system’s operation or data modification is not directly threatened. However, the silent nature of the exploit increases risk as users may remain unaware of the data leakage. Organizations using Apple devices in sensitive sectors such as finance, healthcare, government, or critical infrastructure face heightened risks. The requirement for local access limits remote exploitation but insider threats or malware with local execution capabilities could leverage this flaw. The medium severity rating reflects the balance between significant confidentiality impact and limited attack vector scope.

To mitigate CVE-2024-40833, organizations and users should promptly update all affected Apple devices to iOS 16.7.9, iPadOS 16.7.9, or the corresponding patched macOS versions (Monterey 12.7.6, Sonoma 14.6, Ventura 13.6.8). Beyond patching, administrators should audit and restrict the use of shortcuts, especially those obtained from untrusted sources, to minimize exposure. Implement device management policies that limit the installation and execution of shortcuts or scripts that can access sensitive data. Educate users about the risks of running shortcuts without verifying their origin and encourage the use of device encryption and strong authentication to reduce the risk of unauthorized local access. Monitoring for unusual shortcut activity or data exfiltration attempts can provide early detection. For high-security environments, consider disabling shortcuts or restricting their capabilities via configuration profiles. Regularly review and update security policies to incorporate lessons from this vulnerability and maintain a robust endpoint security posture.