CVE-2024-40807 is a logic vulnerability identified in Apple macOS that allows a shortcut to use sensitive data without prompting the user for permission. The root cause is an insufficient validation mechanism within the shortcut execution framework, which fails to enforce proper user consent before accessing sensitive information. This flaw is categorized under CWE-285 (Improper Authorization), indicating that the system does not adequately restrict access to sensitive data based on user privileges or context. The vulnerability affects macOS versions prior to the patched releases: Monterey 12.7.6, Sonoma 14.6, and Ventura 13.6.8. The CVSS 3.1 base score is 5.5 (medium severity), with the vector indicating local attack vector (AV:L), low attack complexity (AC:L), requiring low privileges (PR:L), no user interaction (UI:N), unchanged scope (S:U), high confidentiality impact (C:H), no integrity impact (I:N), and no availability impact (A:N). Exploitation requires an attacker to have local access with low privileges but does not require user interaction, making it possible for malicious shortcuts or scripts to silently access sensitive data. The vulnerability does not affect system integrity or availability but compromises confidentiality, potentially exposing sensitive user or system data. Apple addressed the issue by improving the authorization checks within the shortcut framework to ensure user prompts are enforced appropriately. No public exploits or active exploitation in the wild have been reported as of the publication date.

The primary impact of CVE-2024-40807 is the unauthorized disclosure of sensitive data on affected macOS systems. Since the vulnerability allows shortcuts to access sensitive information without user consent, attackers with local access could leverage malicious shortcuts or scripts to extract confidential data silently. This can lead to privacy breaches, leakage of personal or corporate information, and potential escalation of further attacks if sensitive credentials or tokens are exposed. The vulnerability does not affect system integrity or availability, so it does not directly enable system compromise or denial of service. However, the confidentiality breach can have significant consequences, especially in environments where sensitive data protection is critical, such as enterprises, government agencies, and organizations handling regulated data. The requirement for local access and low privileges limits remote exploitation but does not eliminate risk in multi-user or shared device scenarios. The lack of user interaction requirement increases the risk of stealthy data access. Organizations relying heavily on macOS devices, particularly those using shortcuts for automation, are at increased risk of data leakage if unpatched.

To mitigate CVE-2024-40807, organizations and users should immediately apply the security updates provided by Apple in macOS Monterey 12.7.6, Sonoma 14.6, and Ventura 13.6.8 or later. Beyond patching, administrators should audit and restrict the use of shortcuts, especially those obtained from untrusted sources, to minimize the risk of malicious shortcut execution. Implement strict policies governing shortcut creation and deployment, including code review and approval processes. Employ endpoint security solutions capable of monitoring and controlling shortcut activities and script executions. Educate users about the risks of running shortcuts from unknown or unverified sources. Consider deploying macOS configuration profiles or MDM policies to limit shortcut permissions or disable shortcuts where not required. Regularly review system logs for unusual shortcut activity or access to sensitive data. For high-security environments, consider isolating macOS devices or restricting local user privileges to reduce the attack surface. Finally, maintain an up-to-date inventory of macOS devices and ensure timely patch management to reduce exposure.