CVE-2025-43467 is a privilege escalation vulnerability affecting Apple macOS, identified and addressed in macOS Tahoe 26.1. The vulnerability arises from insufficient privilege checks within the operating system, allowing a local application with limited privileges (low-level user permissions) to escalate its privileges to root without requiring user interaction. The CVSS v3.1 score of 7.8 reflects the vulnerability's characteristics: it requires local access (AV:L), low attack complexity (AC:L), low privileges (PR:L), no user interaction (UI:N), and impacts confidentiality, integrity, and availability (C:H/I:H/A:H). This means an attacker who already has limited access to the system can exploit this flaw to gain full administrative control, potentially leading to complete system compromise. The vulnerability was reserved in April 2025 and published in December 2025, with Apple releasing a fix in macOS Tahoe 26.1 by improving the privilege checks that were previously insufficient. There are no known exploits in the wild at this time, but the vulnerability's nature makes it a significant risk if exploited. The affected versions are unspecified, but it is implied that all macOS versions prior to Tahoe 26.1 are vulnerable. This vulnerability is critical for environments where macOS is widely used, especially in enterprise and development settings.

The impact of CVE-2025-43467 is severe for organizations using macOS systems. Successful exploitation allows an attacker with limited local access to gain root privileges, effectively bypassing all security controls and restrictions. This can lead to unauthorized access to sensitive data, installation of persistent malware, disruption of system services, and complete loss of system integrity and availability. For enterprises, this could mean data breaches, intellectual property theft, and operational downtime. The vulnerability also increases the risk of insider threats or attacks originating from compromised user accounts. Since no user interaction is required, automated or stealthy attacks are possible once local access is obtained. Organizations relying on macOS for critical infrastructure, development, or endpoint devices face heightened risk, especially if patching is delayed or if endpoint security controls are insufficient.

To mitigate CVE-2025-43467, organizations should immediately update all macOS devices to version Tahoe 26.1 or later, where the vulnerability is fixed. In addition to patching, organizations should enforce strict application whitelisting and limit local user privileges to the minimum necessary, reducing the attack surface. Monitoring and logging local privilege escalation attempts can help detect exploitation attempts early. Employ endpoint detection and response (EDR) solutions that can identify suspicious behavior indicative of privilege escalation. Restrict installation of unauthorized software and regularly audit installed applications and user permissions. For environments with sensitive data, consider implementing additional layers of security such as disk encryption and multi-factor authentication to limit the impact of a compromised device. Finally, educate users about the risks of running untrusted applications locally.