CVE-2024-27887 is a vulnerability identified in Apple macOS involving improper path handling, specifically a failure to adequately validate file paths used by applications. This flaw is classified under CWE-22, which concerns directory traversal or path traversal issues that allow unauthorized access to files outside intended directories. The vulnerability allows a malicious application to access user-sensitive data by exploiting this path validation weakness. The issue does not require any privileges or user interaction, but the attacker must have local access to run the malicious app. The vulnerability affects macOS versions before Sonoma 14.4, where Apple has implemented improved validation to address the problem. The CVSS v3.1 score is 6.2 (medium severity), with the vector indicating local attack vector (AV:L), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), unchanged scope (S:U), high confidentiality impact (C:H), and no impact on integrity or availability (I:N/A:N). No public exploits are known, but the potential for sensitive data exposure is significant. This vulnerability could be leveraged by attackers to access personal or corporate data stored on affected macOS systems, posing a risk to user privacy and organizational data security.

The primary impact of CVE-2024-27887 is the unauthorized disclosure of sensitive user data on affected macOS systems. Since the vulnerability allows local applications to bypass intended access controls through path traversal, attackers with local access can read confidential files, potentially including personal documents, credentials, or corporate data. This breach of confidentiality can lead to privacy violations, intellectual property theft, or further targeted attacks. The vulnerability does not affect system integrity or availability, so it does not allow modification or disruption of system operations. However, the ease of exploitation without privileges or user interaction increases the risk in environments where users can install or run untrusted applications. Organizations relying on macOS devices for sensitive operations, especially in sectors like technology, finance, and government, face increased risk of data leakage. The absence of known exploits reduces immediate threat but does not eliminate future exploitation potential.

To mitigate CVE-2024-27887, organizations and users should promptly update all affected macOS systems to version Sonoma 14.4 or later, where the vulnerability has been addressed through improved path validation. Beyond patching, organizations should enforce strict application control policies to limit the installation and execution of untrusted or unsigned applications, reducing the risk of local malicious apps exploiting this flaw. Employ endpoint security solutions capable of detecting anomalous file access patterns indicative of path traversal attempts. Regularly audit user permissions and restrict local user capabilities where possible to minimize the attack surface. Educate users about the risks of running unknown applications and implement network segmentation to isolate sensitive macOS devices. Finally, monitor system logs for unusual file access activities that may signal exploitation attempts.