CVE-2025-43188 is a vulnerability in Apple macOS identified as a permissions issue that allows a malicious application to gain root privileges. The root cause is related to improper permission restrictions, which were insufficiently enforced prior to the patch in macOS Sequoia 15.6. This vulnerability falls under CWE-269 (Improper Privilege Management), indicating that the system failed to correctly restrict access rights. Exploitation requires local access and user interaction, meaning an attacker must trick a user into running a malicious app. Once exploited, the attacker gains full root-level control over the system, enabling them to bypass security controls, access sensitive data, modify system files, and disrupt system availability. The CVSS v3.1 base score is 7.8, reflecting high severity with the vector AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, indicating low attack complexity, no privileges required, but user interaction is necessary. No known exploits are currently in the wild, but the vulnerability’s nature makes it a critical target for attackers aiming for privilege escalation on macOS devices. The fix involves additional permission restrictions implemented in macOS Sequoia 15.6, which users and organizations must apply promptly to mitigate risk.

The impact of CVE-2025-43188 is significant for organizations using macOS systems. Successful exploitation grants attackers root privileges, effectively giving them unrestricted access to the affected device. This compromises confidentiality by exposing sensitive data, integrity by allowing unauthorized modification or deletion of files and system configurations, and availability by enabling disruptive actions such as system crashes or denial of service. For enterprises, this can lead to data breaches, lateral movement within networks, and persistent footholds. The requirement for local access and user interaction somewhat limits remote exploitation but does not eliminate risk, especially in environments where users may be targeted with social engineering or malicious software. The vulnerability poses a high risk to sectors relying heavily on macOS, including technology, creative industries, government, and education. Without timely patching, attackers could leverage this vulnerability to escalate privileges and execute further attacks, potentially compromising entire organizational infrastructures.

To mitigate CVE-2025-43188, organizations should immediately update all macOS devices to version Sequoia 15.6 or later, where the vulnerability is patched. Beyond patching, implement strict application control policies to prevent installation or execution of untrusted or unsigned applications. Employ endpoint detection and response (EDR) tools to monitor for unusual privilege escalation behaviors and suspicious process executions. Limit local user permissions by enforcing least privilege principles, reducing the likelihood that a user can run malicious code that exploits this vulnerability. Educate users about the risks of running unknown applications and the importance of verifying software sources. Additionally, use macOS security features such as System Integrity Protection (SIP) and Gatekeeper to restrict unauthorized modifications and app installations. Regularly audit system logs for signs of exploitation attempts and maintain up-to-date backups to recover from potential compromises. Network segmentation can also help contain any breach resulting from exploitation.