CVE-2025-43196 is a vulnerability in Apple macOS caused by improper validation of file paths, categorized under CWE-22 (Path Traversal). This flaw allows a local application with limited privileges to exploit path handling weaknesses to escalate its privileges to root. The vulnerability affects macOS versions prior to Sequoia 15.6, Sonoma 14.7.7, and Ventura 13.7.7, where Apple has implemented improved path validation to remediate the issue. The vulnerability does not require user interaction but does require the attacker to have some level of local access (low privileges). The CVSS v3.1 score of 7.8 indicates a high severity, with the vector AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H meaning the attack is local, requires low attack complexity, low privileges, no user interaction, unchanged scope, and results in high confidentiality, integrity, and availability impacts. Although no known exploits are currently reported in the wild, the potential for privilege escalation to root makes this a critical concern for macOS users. The flaw could be leveraged by malicious insiders or malware that gains initial foothold with limited privileges to fully compromise the system. The vulnerability underscores the importance of robust path validation in operating system components to prevent unauthorized access escalation.

The primary impact of CVE-2025-43196 is unauthorized privilege escalation from a low-privileged local user or process to root-level access on macOS systems. This allows attackers to gain full control over the affected system, including the ability to modify system files, install persistent malware, disable security controls, and access sensitive data. Such a compromise can lead to complete system takeover, data breaches, and disruption of critical services. Organizations relying on macOS for desktops, laptops, or servers in sensitive environments face increased risk of insider threats or malware leveraging this vulnerability to escalate privileges. The high severity and ease of exploitation with low privileges make it a significant threat to confidentiality, integrity, and availability. Although no active exploits are known, the vulnerability could be targeted in future attacks, especially in environments where patching is delayed. This elevates the risk for enterprises, government agencies, and critical infrastructure operators using affected macOS versions.

1. Immediately apply the security updates provided by Apple for macOS Sequoia 15.6, Sonoma 14.7.7, and Ventura 13.7.7 or later to remediate the vulnerability. 2. Restrict local access to macOS systems by enforcing strong access controls, limiting user accounts with local login privileges, and using endpoint protection solutions to detect suspicious activities. 3. Implement application whitelisting and least privilege principles to minimize the risk of malicious apps running with any privileges. 4. Monitor system logs and audit trails for unusual privilege escalation attempts or anomalous path usage patterns that may indicate exploitation attempts. 5. Educate users about the risks of installing untrusted software and the importance of applying system updates promptly. 6. For high-security environments, consider additional hardening measures such as sandboxing applications and using macOS security features like System Integrity Protection (SIP) to limit root-level modifications. 7. Regularly review and update incident response plans to include scenarios involving local privilege escalation on macOS.