CVE-2025-43188 is a permissions-related vulnerability in Apple macOS that allows a malicious application to escalate privileges to root. The root cause is an improper permission configuration that fails to adequately restrict certain operations, enabling privilege escalation. Apple addressed this issue in macOS Sequoia 15.6 by implementing additional restrictions to tighten permission controls. The vulnerability requires local access and user interaction, meaning an attacker must trick a user into running a malicious app. No prior privileges are needed, which increases the risk. The vulnerability is classified under CWE-269 (Improper Privilege Management), highlighting that the system incorrectly grants elevated privileges. The CVSS v3.1 base score is 7.8, reflecting high impact on confidentiality, integrity, and availability, with low attack complexity and no privileges required. Although no public exploits are known, the potential for a malicious app to gain root access poses a significant threat to system security, potentially allowing full system compromise, data theft, or disruption of services. This vulnerability affects unspecified versions of macOS prior to 15.6, so all users running earlier versions are at risk. Organizations using macOS in sensitive environments should urgently apply the patch and review application installation policies.

The primary impact of CVE-2025-43188 is unauthorized privilege escalation to root, which compromises the confidentiality, integrity, and availability of affected macOS systems. An attacker gaining root privileges can execute arbitrary code with full system control, bypass security controls, access sensitive data, install persistent malware, and disrupt system operations. This can lead to data breaches, system downtime, and loss of trust. For organizations, this vulnerability threatens endpoint security, especially in environments where macOS devices are used for critical business functions or contain sensitive information. The ease of exploitation (requiring only user interaction and local access) increases the risk of targeted attacks or malware campaigns. Although no known exploits are currently reported, the vulnerability’s presence in widely used macOS systems means it could be leveraged in future attacks, including supply chain compromises or insider threats. The impact extends to any organization or individual relying on vulnerable macOS versions, particularly those with lax application control policies or high-value targets.

To mitigate CVE-2025-43188, organizations and users should immediately upgrade to macOS Sequoia 15.6 or later, where the vulnerability is patched. Beyond patching, implement strict application whitelisting to prevent unauthorized or untrusted applications from executing. Employ endpoint protection solutions capable of detecting suspicious privilege escalation attempts. Educate users about the risks of running unverified applications and the importance of cautious user interaction. Limit local user permissions where possible, avoiding administrative privileges for daily use accounts. Monitor system logs for unusual privilege escalation activities and conduct regular audits of installed applications. For enterprise environments, enforce Mobile Device Management (MDM) policies that restrict software installation and execution. Additionally, consider network segmentation to limit lateral movement if a device is compromised. Maintain up-to-date backups to enable recovery in case of compromise.