CVE-2025-43369 is a vulnerability in Apple macOS identified by improper handling of symbolic links, which can allow an application to access protected user data without proper authorization. The root cause lies in the operating system's failure to correctly enforce access controls when resolving symlinks, potentially enabling an app to bypass intended security restrictions. This vulnerability is classified under CWE-284 (Improper Access Control), highlighting an authorization bypass scenario. Exploitation requires local access and user interaction, but no elevated privileges are necessary, making it accessible to less privileged users or malicious applications running under a standard user context. The vulnerability affects macOS versions prior to the release of macOS Tahoe 26, where Apple implemented improved symlink handling to fix the issue. The CVSS v3.1 base score is 5.5, reflecting a medium severity level with high confidentiality impact but no impact on integrity or availability. No known exploits have been reported in the wild, but the potential for unauthorized data access makes this a significant concern for privacy and data protection. The vulnerability underscores the importance of robust symbolic link resolution and access control mechanisms within operating systems to prevent unauthorized data exposure.

The primary impact of CVE-2025-43369 is unauthorized access to protected user data, compromising confidentiality. This can lead to exposure of sensitive personal or corporate information, potentially resulting in privacy violations, data leakage, or intellectual property theft. Since the vulnerability does not affect integrity or availability, the risk is confined to data confidentiality. The requirement for local access and user interaction limits remote exploitation but does not eliminate risk, especially in environments where untrusted applications or users have access to macOS systems. Organizations relying on macOS for sensitive operations or storing critical data are at risk of data breaches if this vulnerability is exploited. The absence of known exploits in the wild reduces immediate threat but does not preclude future attacks. Failure to patch could enable insider threats or malware to leverage this flaw to escalate data access privileges, undermining trust in system security.

To mitigate CVE-2025-43369, organizations should promptly update all affected macOS systems to macOS Tahoe 26 or later, where the vulnerability is fixed. Beyond patching, implement strict application whitelisting and sandboxing to limit the execution of untrusted or potentially malicious applications that could exploit symlink handling flaws. Employ endpoint security solutions capable of detecting suspicious local activities involving symbolic links or unauthorized file access attempts. Conduct regular audits of file system permissions and symlink usage to identify and remediate misconfigurations. Educate users about the risks of interacting with untrusted applications or files that could trigger exploitation. In environments with shared or multi-user access, enforce least privilege principles and monitor for unusual local user behaviors. Additionally, consider deploying macOS security features such as System Integrity Protection (SIP) and Full Disk Encryption to reduce the impact of unauthorized data access. Maintain an incident response plan that includes procedures for handling potential data exposure incidents stemming from local privilege abuse.