CVE-2025-30455 is a vulnerability identified in Apple macOS that allows a malicious application to access private information due to insufficient validation or enforcement of access controls. The issue stems from inadequate checks within the operating system that permit unauthorized disclosure of sensitive data when a malicious app is executed. The vulnerability requires local access (AV:L), meaning the attacker must have a foothold on the system, and user interaction (UI:R), indicating the user must perform some action such as launching or interacting with the malicious app. The attack complexity is low (AC:L), and no privileges are required (PR:N), making it easier for an attacker with local access to exploit. The vulnerability impacts confidentiality (C:H) but does not affect integrity (I:N) or availability (A:N). It is categorized under CWE-200, which relates to exposure of sensitive information. Apple addressed this vulnerability by implementing improved checks in macOS Sequoia 15.4 and macOS Sonoma 14.7.5, closing the gap that allowed unauthorized data access. There are currently no known exploits in the wild, but the medium CVSS score of 5.5 reflects the moderate risk posed by this vulnerability. The lack of required privileges but need for user interaction suggests social engineering or tricking users into running the malicious app is necessary for exploitation.

The primary impact of CVE-2025-30455 is unauthorized disclosure of private information on affected macOS systems. This can lead to leakage of sensitive user data, intellectual property, or confidential organizational information. For organizations, this vulnerability could facilitate insider threats or attacks by local adversaries who gain limited access, potentially escalating their knowledge of the environment. Although it does not allow modification or disruption of system operations, the exposure of sensitive data can have serious privacy and compliance implications, especially for sectors handling regulated or proprietary information. The requirement for user interaction limits remote exploitation but does not eliminate risk, as social engineering can be effective. The vulnerability could be leveraged in targeted attacks against high-value macOS users, including executives, developers, or researchers. The absence of known exploits reduces immediate risk but patching is critical to prevent future exploitation. Overall, the impact is moderate but significant in environments with sensitive data and local threat vectors.

To mitigate CVE-2025-30455, organizations should prioritize updating all affected macOS systems to versions macOS Sequoia 15.4 or macOS Sonoma 14.7.5 or later, where the vulnerability is fixed. Implement strict application control policies to prevent installation or execution of unauthorized or untrusted applications, leveraging Apple’s notarization and Gatekeeper features. Enhance user awareness and training to recognize and avoid running suspicious or unverified apps, reducing the risk of social engineering exploitation. Employ endpoint detection and response (EDR) solutions capable of monitoring for unusual local app behaviors that may indicate attempts to access sensitive information. Restrict local user privileges and enforce the principle of least privilege to limit the potential impact of compromised accounts. Regularly audit installed applications and system logs for signs of exploitation attempts. For high-security environments, consider additional sandboxing or containerization of applications to isolate potentially malicious code. Finally, maintain an up-to-date inventory of macOS devices and ensure timely patch management processes are in place.