CVE-2025-43479 is a permissions-related vulnerability in Apple macOS identified as CWE-200 (Exposure of Sensitive Information). The issue arises from insufficient restrictions on app permissions, allowing an application to access sensitive user data that should otherwise be protected. This vulnerability affects macOS versions prior to Sequoia 15.7.2, Sonoma 14.8.2, and Tahoe 26.1, where Apple has introduced additional permission restrictions to remediate the flaw. The CVSS v3.1 base score is 5.5, indicating a medium severity level. The attack vector is local (AV:L), requiring the attacker to have local access to the system. The attack complexity is low (AC:L), no privileges are required (PR:N), but user interaction is necessary (UI:R). The scope is unchanged (S:U), and the impact is high on confidentiality (C:H) with no impact on integrity (I:N) or availability (A:N). This means an attacker can potentially read sensitive user data without altering or disrupting system operations. No known exploits have been reported in the wild, but the vulnerability presents a risk if malicious apps are executed locally. The vulnerability underscores the importance of strict permission controls in modern operating systems to protect user privacy and data security.

The primary impact of CVE-2025-43479 is the unauthorized disclosure of sensitive user data on affected macOS systems. This can lead to privacy violations, leakage of personal or corporate information, and potential downstream attacks such as identity theft or targeted phishing campaigns. Since exploitation requires local access and user interaction, the risk is mitigated somewhat by the need for an attacker to convince a user to run a malicious app or gain physical or remote access to the device. However, in environments where users install third-party software frequently or where endpoint security is lax, the vulnerability could be leveraged by attackers to harvest confidential data. Organizations relying on macOS for sensitive operations, including enterprises, government agencies, and creative industries, may face data confidentiality risks. The vulnerability does not affect system integrity or availability, so it is less likely to cause system disruption or data corruption. The absence of known exploits in the wild reduces immediate risk but does not eliminate the need for timely patching.

1. Apply the security updates provided by Apple immediately by upgrading to macOS Sequoia 15.7.2, Sonoma 14.8.2, or Tahoe 26.1 or later versions. 2. Enforce strict application control policies to limit installation and execution of untrusted or unsigned applications, reducing the chance of malicious apps exploiting this vulnerability. 3. Educate users on the risks of running unknown or suspicious applications, emphasizing the need for caution with software from unverified sources. 4. Implement endpoint detection and response (EDR) solutions capable of monitoring and alerting on unusual local app behaviors that may indicate attempts to access sensitive data. 5. Regularly audit app permissions and system logs to detect unauthorized access attempts. 6. Use macOS built-in privacy features and system integrity protections to limit app access to sensitive data where possible. 7. For organizations, consider network segmentation and least privilege principles to reduce the impact of compromised endpoints. These steps go beyond generic patching advice by focusing on user behavior, application control, and monitoring to reduce exploitation likelihood and impact.