CVE-2024-0258 is a vulnerability identified in Apple tvOS and other Apple operating systems (iOS, iPadOS, macOS Sonoma, watchOS) that allows an application to execute arbitrary code outside its sandbox or with elevated privileges. The root cause is improper memory handling, which Apple addressed in updates 17.4 for tvOS, iOS, iPadOS, watchOS 10.4, and macOS Sonoma 14.4. This vulnerability falls under CWE-284 (Improper Access Control), indicating that the affected systems do not adequately enforce privilege boundaries. The CVSS 3.1 score is 8.2 (high), with vector AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H, meaning the attack requires local access with high privileges but no user interaction, and it can compromise confidentiality, integrity, and availability with a scope change (cross-privilege boundary). Although no known exploits have been reported in the wild, the potential for an app to escape sandbox restrictions or gain elevated privileges poses a significant risk. This could lead to unauthorized access to sensitive data, persistent malware installation, or disruption of device functionality. The vulnerability affects all unspecified versions prior to the patched releases, emphasizing the importance of timely updates. The issue is particularly critical for environments where Apple devices are used for sensitive operations or where apps from less trusted sources might be installed.

For European organizations, this vulnerability presents a serious risk to the security of Apple devices used within corporate networks or critical infrastructure. Successful exploitation could allow malicious applications to bypass sandbox protections, leading to unauthorized data access, credential theft, or installation of persistent malware with elevated privileges. This undermines confidentiality, integrity, and availability of affected devices. Sectors such as finance, healthcare, government, and media—where Apple devices are commonly deployed—could face operational disruptions or data breaches. The requirement for local privileged access limits remote exploitation but does not eliminate risk, especially in environments where insider threats or compromised devices exist. Additionally, the cross-privilege boundary impact means that even apps with limited permissions could escalate their privileges, increasing the attack surface. The lack of known exploits in the wild provides a window for proactive mitigation, but organizations must act swiftly to prevent potential targeted attacks.

European organizations should prioritize updating all Apple devices to the patched versions: tvOS 17.4, iOS 17.4, iPadOS 17.4, macOS Sonoma 14.4, and watchOS 10.4. Implement strict application control policies to limit installation to trusted sources only, reducing the risk of malicious apps exploiting this vulnerability. Employ mobile device management (MDM) solutions to enforce patch compliance and monitor for unusual app behavior indicative of sandbox escape attempts. Conduct regular audits of installed applications and permissions to detect anomalies. Limit local privileged access to devices by enforcing least privilege principles and using strong authentication mechanisms. Educate users about the risks of installing untrusted apps and the importance of timely updates. Network segmentation can help contain compromised devices and prevent lateral movement. Finally, maintain up-to-date endpoint detection and response (EDR) tools capable of identifying suspicious activities related to privilege escalation or sandbox escapes.