CVE-2025-43207 is a vulnerability in Apple macOS identified as a weakness in entitlement enforcement (CWE-284), which allows an application to access user-sensitive data without proper authorization. Entitlements in macOS define the privileges an app has, controlling access to protected resources. This vulnerability implies that an app with insufficient or incorrect entitlement checks can bypass these restrictions and read sensitive user data. The vulnerability has been addressed by Apple in macOS Tahoe 26 through improved entitlement mechanisms. The CVSS 3.1 base score is 5.5 (medium severity), with the vector AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N, indicating that exploitation requires local access, low complexity, no privileges, and user interaction, with a high impact on confidentiality but no impact on integrity or availability. The affected versions are unspecified but presumably all versions before macOS Tahoe 26. No known exploits have been reported in the wild, suggesting limited or no active exploitation at this time. The vulnerability could be exploited by a malicious or compromised app running locally, potentially leading to unauthorized disclosure of sensitive user information such as personal files, credentials, or other protected data. This poses a significant privacy risk, especially in environments where sensitive data is handled on macOS devices.

For European organizations, this vulnerability poses a risk of unauthorized disclosure of sensitive user data on macOS devices. Organizations in sectors such as finance, healthcare, legal, and government, which often handle regulated or confidential information, could face compliance and reputational risks if sensitive data is exposed. The requirement for local access and user interaction limits remote exploitation but does not eliminate the risk from insider threats, compromised devices, or malicious apps installed by users. Data confidentiality is the primary concern, with potential impacts including data breaches, privacy violations under GDPR, and loss of customer trust. The absence of integrity or availability impacts reduces the risk of system disruption but does not diminish the importance of protecting sensitive information. Given the widespread use of macOS in European enterprises, especially in creative, technology, and professional services sectors, the vulnerability could affect a significant number of endpoints if not patched promptly.

1. Upgrade all macOS devices to macOS Tahoe 26 or later, where the vulnerability is fixed. 2. Implement strict application control policies to prevent installation of untrusted or unsigned apps that could exploit this vulnerability. 3. Review and audit app entitlements and permissions regularly to ensure no excessive privileges are granted. 4. Educate users about the risks of installing unknown or suspicious applications and the importance of user interaction in exploitation. 5. Employ endpoint detection and response (EDR) solutions capable of monitoring for unusual local app behavior or unauthorized data access attempts. 6. Use Mobile Device Management (MDM) solutions to enforce security policies and automate patch deployment across macOS fleets. 7. Restrict local user privileges where possible to minimize the impact of compromised user accounts. 8. Monitor logs and alerts for signs of data access anomalies or privilege escalation attempts. 9. Prepare incident response plans specific to macOS environments to quickly address potential exploitation.