CVE-2024-27827 is a vulnerability in Apple macOS that allows a local application to read arbitrary files on the system due to improper state management, specifically a path traversal issue categorized under CWE-22. This flaw enables an app to bypass intended access controls and access files outside its authorized scope. The vulnerability affects macOS versions before Sonoma 14.5 and Ventura 13.6.7, where Apple has implemented fixes to improve state management and prevent unauthorized file reads. The attack vector is local (AV:L), requiring no privileges (PR:N) or user interaction (UI:N), making it possible for any app running on the system to exploit this flaw if it can execute code locally. The impact is high on confidentiality as sensitive files could be exposed, but there is no impact on integrity or availability. The vulnerability does not appear to be exploited in the wild yet. The issue was publicly disclosed on May 13, 2024, and is assigned a CVSS v3.1 score of 6.2, indicating a medium severity. The flaw is significant because it could allow malicious or compromised applications to access sensitive user or system files, potentially leading to privacy breaches or further attacks leveraging leaked information.

The primary impact of CVE-2024-27827 is unauthorized disclosure of sensitive information due to arbitrary file read capabilities by local applications. This can compromise user privacy, expose credentials, configuration files, or other confidential data stored on affected macOS systems. While it does not affect system integrity or availability, the confidentiality breach can facilitate further attacks such as privilege escalation or lateral movement within networks. Organizations relying on macOS devices, especially in sectors handling sensitive data (e.g., finance, healthcare, government), face increased risk of data leakage. The vulnerability's local attack vector limits remote exploitation but does not eliminate risk from insider threats, compromised apps, or malware already present on the system. The absence of known exploits in the wild reduces immediate risk but does not preclude future exploitation once the vulnerability details become widely known.

To mitigate CVE-2024-27827, organizations and users should promptly update affected macOS systems to versions Sonoma 14.5 or Ventura 13.6.7 or later, where the vulnerability is patched. Restrict installation of untrusted or unsigned applications to reduce the risk of malicious apps exploiting this flaw. Employ application whitelisting and endpoint protection solutions that monitor and control local app behaviors. Regularly audit installed software and running processes to detect unauthorized or suspicious applications. Implement strict user privilege management to limit local user capabilities and reduce the attack surface. For enterprise environments, consider deploying Mobile Device Management (MDM) solutions to enforce update policies and application controls. Additionally, monitor system logs for unusual file access patterns that may indicate exploitation attempts. Avoid delaying patches, as the vulnerability allows file access without user interaction or privileges, increasing the risk from local threats.