CVE-2025-24124 is a vulnerability identified in Apple macOS and related Apple operating systems such as iPadOS, watchOS, tvOS, and visionOS. The issue arises from insufficient validation when parsing certain files, which can lead to an unexpected termination of the application processing the file. This type of flaw is typically classified as a denial-of-service (DoS) vulnerability because it disrupts the availability of the affected application without compromising confidentiality or integrity. The vulnerability requires local access and user interaction, meaning an attacker must convince a user to open or process a maliciously crafted file. The CVSS v3.1 base score is 5.5 (medium severity), reflecting the limited scope and impact. Apple has released patches addressing this issue in multiple OS versions, including macOS Ventura 13.7.3, macOS Sonoma 14.7.3, and others, by implementing improved input validation and checks during file parsing. No evidence of active exploitation in the wild has been reported, reducing immediate risk but underscoring the importance of patching. The vulnerability affects unspecified versions of macOS and related Apple OSes, indicating a broad potential impact across Apple device users. The flaw could be exploited in scenarios where users receive malicious files via email, messaging, or external media and open them on vulnerable systems, causing application crashes and potential disruption of workflows.

For European organizations, the primary impact of CVE-2025-24124 is the potential for denial-of-service conditions caused by application crashes when processing malicious files. This can disrupt business operations, especially in environments where Apple macOS devices are integral to workflows, such as creative industries, software development, and certain administrative functions. Although the vulnerability does not allow data theft or system compromise, repeated or targeted exploitation could degrade user productivity and system reliability. Organizations relying on Apple devices for critical tasks may experience interruptions if users inadvertently open crafted files. The lack of known exploits in the wild reduces immediate threat but does not eliminate risk, particularly from targeted phishing or social engineering attacks. The requirement for user interaction limits remote exploitation but does not prevent insider threats or accidental exposure. Overall, the impact is moderate but relevant for sectors with high macOS usage and where availability is critical.

European organizations should prioritize deploying the Apple security updates that address CVE-2025-24124, specifically upgrading to macOS Ventura 13.7.3, macOS Sonoma 14.7.3, or later patched versions for other Apple OSes. Beyond patching, organizations should implement strict controls on file sources, including email filtering, attachment scanning, and restricting the opening of files from untrusted or unknown origins. User awareness training should emphasize the risks of opening unexpected or suspicious files, particularly on Apple devices. Endpoint protection solutions capable of detecting anomalous application crashes or suspicious file parsing behavior can provide additional defense layers. For environments with high security requirements, consider application whitelisting and sandboxing to limit the impact of any unexpected app termination. Regular audits of Apple device patch levels and configuration compliance will help maintain a secure posture. Finally, incident response plans should include procedures for handling denial-of-service scenarios caused by application crashes to minimize operational disruption.