CVE-2025-24176 is a local privilege escalation vulnerability identified in Apple macOS operating systems, specifically addressed in macOS Sequoia 15.3, Sonoma 14.7.3, and Ventura 13.7.3. The root cause is a permissions issue stemming from insufficient validation of access controls, which could allow a local attacker with limited privileges to elevate their privileges to a higher level, potentially administrative or root. The vulnerability falls under CWE-276 (Incorrect Default Permissions), indicating that the system incorrectly assigns or validates permissions, enabling unauthorized privilege escalation. The CVSS v3.1 base score is 7.1, reflecting a high severity due to the vulnerability's impact on confidentiality and integrity, ease of exploitation (local attack vector with low complexity), and no requirement for user interaction. Although no exploits have been observed in the wild, the vulnerability poses a significant risk because it could allow attackers to bypass security controls and gain unauthorized access to sensitive system components or data. The vulnerability affects multiple macOS versions, which are widely used in enterprise, government, and personal environments, increasing the potential attack surface. The fix involves improved validation of permissions to prevent unauthorized privilege escalation. Organizations should apply the security updates provided by Apple promptly to mitigate this risk.

The primary impact of CVE-2025-24176 is unauthorized privilege escalation on affected macOS systems. An attacker who already has local access with limited privileges could exploit this vulnerability to gain elevated privileges, such as root or administrative rights. This escalation compromises system confidentiality and integrity by allowing unauthorized access to sensitive files, system configurations, and security controls. It could facilitate further attacks, including installation of persistent malware, disabling security mechanisms, or accessing confidential data. The vulnerability does not directly affect availability but can indirectly impact system stability if exploited maliciously. Organizations relying on macOS for critical operations, including software development, creative industries, and government agencies, face increased risk of insider threats or lateral movement by attackers. The absence of known exploits in the wild reduces immediate risk but does not eliminate the threat, especially given the relatively low complexity of exploitation. Failure to patch could lead to targeted attacks, particularly in environments with multiple local users or shared systems.

To mitigate CVE-2025-24176, organizations should immediately update affected macOS systems to the patched versions: macOS Sequoia 15.3, Sonoma 14.7.3, or Ventura 13.7.3. Beyond patching, organizations should enforce strict local user account management, limiting the number of users with local access and ensuring least privilege principles are applied. Implement monitoring and alerting for unusual privilege escalation attempts or changes to system permissions. Employ endpoint detection and response (EDR) solutions capable of detecting suspicious local activity indicative of privilege escalation. Regularly audit system permissions and configurations to identify and remediate any deviations from security policies. For environments where immediate patching is not feasible, consider restricting access to vulnerable systems and isolating them from critical network segments. Educate users about the risks of local privilege escalation and the importance of reporting suspicious system behavior. Maintain up-to-date backups and incident response plans to quickly recover from potential compromises.