CVE-2025-24274 is a vulnerability in Apple macOS stemming from an input validation issue categorized under CWE-20. This flaw allows a malicious application, running with limited privileges, to escalate its privileges to root level without requiring user interaction. The vulnerability affects multiple macOS versions prior to Ventura 13.7.6, Sequoia 15.5, and Sonoma 14.7.6, where Apple has addressed the issue by removing the vulnerable code. The CVSS v3.1 score is 7.8, reflecting a high-severity rating due to the potential for complete system compromise. The attack vector is local (AV:L), requiring low privileges (PR:L) but no user interaction (UI:N), and the scope remains unchanged (S:U). The impact on confidentiality, integrity, and availability is high (C:H/I:H/A:H), meaning an attacker can fully control the system, access sensitive data, modify system files, and disrupt system operations. Although no known exploits are currently reported in the wild, the vulnerability presents a significant risk if exploited. The root cause is improper input validation, which Apple fixed by removing the vulnerable code paths in the specified macOS updates. This vulnerability is particularly dangerous because gaining root privileges can bypass most security controls and lead to persistent, stealthy attacks.

For European organizations, this vulnerability poses a serious threat, especially those relying on Apple macOS devices for critical business operations, development, or sensitive data processing. Successful exploitation can lead to full system compromise, allowing attackers to access confidential information, alter or destroy data, and disrupt services. This could impact sectors such as finance, healthcare, government, and technology, where macOS usage is prevalent. The local attack vector means that attackers need some form of initial access, such as through phishing or insider threats, but once inside, they can escalate privileges to root, bypassing endpoint protections. The absence of user interaction requirement increases the risk of automated or stealthy exploitation. Additionally, organizations with Bring Your Own Device (BYOD) policies may face increased exposure if users run vulnerable macOS versions. The lack of known exploits in the wild currently reduces immediate risk but does not diminish the urgency to patch, as exploit development could emerge rapidly.

European organizations should prioritize upgrading all macOS systems to versions Ventura 13.7.6, Sequoia 15.5, or Sonoma 14.7.6 or later to eliminate the vulnerability. Implement strict application control policies to prevent installation or execution of unauthorized or untrusted applications, limiting the ability of malicious apps to gain initial access. Employ endpoint detection and response (EDR) solutions capable of monitoring for suspicious privilege escalation behaviors. Restrict local user privileges by enforcing the principle of least privilege and disabling unnecessary local accounts. Conduct regular audits of installed applications and system logs to detect anomalies. For environments with BYOD policies, enforce compliance checks to ensure devices are patched and secure before network access. Additionally, educate users about the risks of installing untrusted software and the importance of reporting suspicious activity. Network segmentation can limit lateral movement if a device is compromised. Finally, maintain up-to-date backups to enable recovery in case of compromise.