CVE-2023-40454 is a security vulnerability identified in Apple’s iOS and iPadOS platforms, as well as related operating systems such as macOS, tvOS, and watchOS. The core issue is a permissions flaw that allows an application to delete files for which it does not have explicit permission. This indicates a failure in the operating system’s access control mechanisms, permitting apps to bypass normal file system protections. The vulnerability was addressed by Apple through additional restrictions on file deletion operations, implemented in updates released across multiple OS versions including iOS 16.7, iOS 17, iPadOS 16.7, iPadOS 17, macOS Ventura 13.6, macOS Monterey 12.7, macOS Sonoma 14, tvOS 17, and watchOS 10. The lack of a CVSS score suggests this is a newly disclosed issue, but the potential impact on confidentiality is limited since the vulnerability concerns deletion rather than data disclosure. However, the integrity and availability of data are at risk, as unauthorized deletion could lead to data loss or disruption of services relying on affected files. Exploitation does not require elevated privileges beyond app installation, and no user interaction beyond running the malicious app is likely needed. No public exploits have been reported yet, but the vulnerability’s nature makes it a significant concern for environments with sensitive or critical data stored on Apple devices.

For European organizations, the impact of CVE-2023-40454 could be substantial, particularly for those heavily reliant on Apple hardware and software ecosystems. Unauthorized file deletion can result in loss of critical business data, disruption of workflows, and potential downtime. Sectors such as finance, healthcare, government, and critical infrastructure that use iOS and iPadOS devices for operational tasks may face operational risks and compliance challenges if data integrity is compromised. Additionally, organizations with Bring Your Own Device (BYOD) policies may be vulnerable if employees install malicious apps that exploit this flaw. The absence of known exploits reduces immediate risk, but the potential for future weaponization means organizations should act proactively. Data loss incidents could also lead to reputational damage and regulatory scrutiny under GDPR if personal data is affected. The threat is particularly relevant for mobile-first organizations and those using Apple devices for remote work, as the vulnerability could be exploited to delete files without detection.

To mitigate CVE-2023-40454, European organizations should implement the following specific measures: 1) Immediately deploy the latest Apple OS updates that address this vulnerability across all managed devices, including iOS 16.7 or later, iPadOS 16.7 or later, macOS Ventura 13.6 or later, and other relevant platforms. 2) Enforce strict app installation policies restricting users to trusted sources such as the Apple App Store and implement Mobile Device Management (MDM) solutions to control app permissions and monitor device compliance. 3) Regularly audit and monitor file system integrity and access logs on Apple devices to detect unusual deletion activities that may indicate exploitation attempts. 4) Educate users about the risks of installing untrusted apps and encourage vigilance against phishing or social engineering that could lead to malicious app installation. 5) Implement robust backup and recovery procedures to ensure rapid restoration of deleted files and minimize operational disruption. 6) For high-security environments, consider additional endpoint protection solutions that can detect anomalous app behaviors related to file system operations. These targeted mitigations go beyond generic patching advice and focus on operational controls and user awareness to reduce exploitation risk.