CVE-2024-54549 is a vulnerability identified in Apple macOS that allows an application with local privileges to access user-sensitive data that should have been redacted. The root cause is insufficient redaction of sensitive information, which could lead to unauthorized disclosure of confidential user data. This vulnerability does not require user interaction but does require that the attacker has some level of local privileges (PR:L). The attack vector is local (AV:L), meaning the attacker must have access to the system. The vulnerability affects confidentiality (C:H) but does not impact integrity or availability. Apple addressed this issue in macOS Sequoia 15.2 by improving the redaction mechanisms to prevent unauthorized data access. The vulnerability is tracked under CWE-922, which relates to improper restriction of operations within the bounds of a memory buffer or data structure, here manifesting as improper redaction. There are no known exploits in the wild, but the vulnerability poses a risk in environments where untrusted or malicious applications run with local privileges. The CVSS v3.1 base score is 5.5, indicating a medium severity level. The vulnerability is significant for organizations that handle sensitive user data on macOS devices, especially in sectors such as finance, healthcare, and government.

The primary impact of CVE-2024-54549 is the unauthorized disclosure of sensitive user data on affected macOS systems. This can lead to privacy violations, leakage of confidential information, and potential compliance issues for organizations handling regulated data. Since the vulnerability requires local privileges, it is most concerning in environments where multiple users share systems or where attackers can gain limited access through other means (e.g., phishing, malware). The lack of impact on integrity and availability reduces the risk of system disruption or data tampering, but the confidentiality breach alone can have serious consequences, including identity theft, corporate espionage, and reputational damage. Organizations with high-value user data or intellectual property stored on macOS devices are at increased risk. The absence of known exploits in the wild currently limits immediate threat but does not eliminate future exploitation potential.

To mitigate CVE-2024-54549, organizations should promptly update all macOS devices to version Sequoia 15.2 or later, where the vulnerability is fixed. Beyond patching, organizations should enforce strict application control policies to limit the execution of untrusted or unnecessary local applications, reducing the risk of privilege abuse. Employ endpoint detection and response (EDR) solutions to monitor for suspicious local activities that could indicate exploitation attempts. Implement strong user privilege management, ensuring users operate with the least privilege necessary to minimize the impact of local exploits. Regularly audit and review installed applications and processes for anomalous behavior. Additionally, educate users about the risks of installing untrusted software and maintain robust backup and incident response plans to quickly address any data exposure incidents. For environments with highly sensitive data, consider additional data encryption and access controls at the application level to further limit exposure.