CVE-2025-24247 is a critical security vulnerability identified in Apple macOS, characterized as a type confusion issue that can cause unexpected application termination. Type confusion vulnerabilities occur when a program incorrectly interprets the type of an object, leading to unpredictable behavior such as memory corruption or crashes. In this case, the flaw allows an attacker to trigger unexpected termination of applications, potentially leading to denial of service conditions. The vulnerability affects multiple recent macOS versions, specifically Ventura 13.7.5, Sequoia 15.4, and Sonoma 14.7.5, and was addressed by Apple through improved type checking mechanisms. The CVSS v3.1 base score is 9.8, reflecting a critical severity with metrics indicating network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), unchanged scope (S:U), and high impacts on confidentiality (C:H), integrity (I:H), and availability (A:H). This means an unauthenticated attacker can remotely exploit the vulnerability without user interaction, potentially causing severe disruption. Although no known exploits have been reported in the wild, the vulnerability's characteristics make it a high-risk target for attackers aiming to disrupt services or gain further footholds. The CWE classification is CWE-400, which relates to uncontrolled resource consumption, consistent with denial of service outcomes. The vulnerability's technical details emphasize the importance of applying the patches Apple released to mitigate the risk. Organizations running affected macOS versions should prioritize patch deployment and monitor for anomalous application crashes that may indicate exploitation attempts.

For European organizations, the impact of CVE-2025-24247 can be significant, especially for those relying heavily on Apple macOS devices for critical business operations, including government agencies, financial institutions, and technology companies. The vulnerability's ability to cause unexpected app termination can lead to denial of service, disrupting workflows, causing data loss, or interrupting customer-facing services. The high confidentiality and integrity impact ratings suggest that exploitation could also lead to unauthorized data access or manipulation, potentially exposing sensitive information or corrupting critical data. The ease of exploitation without authentication or user interaction increases the risk of widespread attacks, including automated scanning and exploitation campaigns. This could affect remote workers and on-premises systems alike, complicating incident response. Additionally, the disruption caused by this vulnerability could be leveraged as part of multi-stage attacks, including ransomware or espionage campaigns targeting European entities. The absence of known exploits in the wild currently provides a window for proactive defense, but the critical severity demands urgent attention to prevent potential exploitation.

1. Immediate deployment of the security updates released by Apple for macOS Ventura 13.7.5, Sequoia 15.4, and Sonoma 14.7.5 is essential to remediate the vulnerability. 2. Conduct an inventory of all macOS devices within the organization to ensure all systems are identified and updated promptly. 3. Implement network segmentation and firewall rules to limit exposure of macOS systems to untrusted networks, reducing the attack surface. 4. Enhance monitoring and logging for unusual application crashes or system instability that may indicate exploitation attempts. 5. Employ endpoint detection and response (EDR) solutions capable of detecting anomalous behavior related to type confusion or memory corruption exploits. 6. Educate IT and security teams about the vulnerability specifics to improve incident detection and response readiness. 7. Review and tighten access controls to macOS systems, including restricting administrative privileges and enforcing strong authentication mechanisms. 8. Consider temporary compensating controls such as disabling vulnerable services or applications if patching cannot be immediately performed. 9. Coordinate with Apple support and security advisories to stay informed about any emerging exploit reports or additional mitigations. 10. Integrate this vulnerability into risk assessments and incident response plans to ensure preparedness for potential exploitation scenarios.