CVE-2025-24277 is a vulnerability identified in Apple macOS involving a parsing issue in the handling of directory paths. Specifically, the flaw stems from insufficient validation of directory path inputs, allowing a malicious application to manipulate path parsing logic to escalate its privileges to root level. This vulnerability is categorized under CWE-276, which relates to improper privilege management. The issue affects multiple macOS versions before Ventura 13.7.5, Sequoia 15.4, and Sonoma 14.7.5, where Apple has addressed the problem by implementing improved path validation mechanisms. The CVSS v3.1 base score is 7.8, indicating a high severity level. The vector details specify that the attack requires local access (AV:L), low attack complexity (AC:L), no privileges required (PR:N), but user interaction is necessary (UI:R). The scope is unchanged (S:U), and the impact on confidentiality, integrity, and availability is high (C:H/I:H/A:H). This means an attacker with local access and the ability to trick a user into running a malicious app can gain full root privileges, compromising the entire system. No public exploits have been reported yet, but the vulnerability poses a significant risk due to the critical nature of root access. The flaw could be leveraged to install persistent malware, exfiltrate sensitive data, or disrupt system operations.

The impact of CVE-2025-24277 is substantial for organizations and individuals using affected macOS versions. Successful exploitation grants an attacker root privileges, effectively giving full control over the system. This can lead to unauthorized access to sensitive information, installation of persistent malware, disabling of security controls, and disruption of system availability. For enterprises, this could mean compromise of corporate data, lateral movement within networks, and potential breaches of regulatory compliance. The requirement for local access and user interaction somewhat limits remote exploitation but does not eliminate risk, especially in environments where users may run untrusted or malicious applications. The vulnerability is particularly critical in sectors relying heavily on macOS for sensitive operations, such as technology firms, creative industries, government agencies, and educational institutions. The absence of known exploits in the wild provides a window for proactive mitigation before widespread attacks occur.

To mitigate CVE-2025-24277, organizations and users should immediately apply the security updates provided by Apple in macOS Ventura 13.7.5, Sequoia 15.4, and Sonoma 14.7.5 or later. Beyond patching, implement strict application whitelisting and code signing enforcement to prevent execution of unauthorized or untrusted applications. Employ endpoint protection solutions capable of detecting privilege escalation attempts and anomalous behavior indicative of exploitation. Educate users to avoid running unknown or suspicious apps and to be cautious with prompts requiring elevated privileges. Regularly audit and monitor local user activities for unusual privilege escalations. For environments with high security requirements, consider restricting local user permissions and employing macOS’s built-in security features such as System Integrity Protection (SIP) and Mandatory Access Controls. Maintain up-to-date backups to recover from potential compromise. Finally, monitor threat intelligence feeds for any emerging exploit code or attack campaigns targeting this vulnerability.