CVE-2024-44238 is a memory corruption vulnerability in Apple’s iOS and iPadOS platforms, specifically affecting the coprocessor memory management. The root cause is insufficient bounds checking in the handling of coprocessor memory by the operating system, which allows a local app with limited privileges (PR:L) to corrupt memory areas it should not access. This vulnerability falls under CWE-119, indicating a classic buffer overflow or out-of-bounds write scenario. Exploitation does not require user interaction (UI:N), but does require local access, meaning an attacker must have an app installed on the device. The impact is severe, with potential full compromise of confidentiality, integrity, and availability (C:H/I:H/A:H). The vulnerability was fixed by Apple in iOS and iPadOS 18.1 through improved bounds checking mechanisms that prevent memory corruption. No known exploits are currently reported in the wild, but the high CVSS score of 7.8 reflects the significant risk posed by this flaw. The vulnerability affects unspecified versions prior to 18.1, so all devices running earlier versions are vulnerable. This vulnerability is particularly concerning because the coprocessor often handles sensitive operations such as cryptographic functions, biometric data processing, or secure enclave tasks, meaning corruption here could lead to privilege escalation or data leakage.

For European organizations, the impact of CVE-2024-44238 is substantial. Many enterprises rely on iOS and iPadOS devices for secure communications, mobile productivity, and access to corporate resources. A successful exploit could allow a malicious app to corrupt critical coprocessor memory, potentially leading to unauthorized data access, device instability, or complete device compromise. This could result in leakage of sensitive corporate or personal data, disruption of business operations, and loss of trust in mobile device security. Sectors such as finance, healthcare, government, and critical infrastructure, which often use Apple devices for secure mobile workflows, are particularly at risk. The vulnerability’s local exploit requirement means that attackers need to convince users to install a malicious app or compromise an existing app, which is feasible through social engineering or supply chain attacks. The absence of required user interaction lowers the barrier for exploitation once the app is installed. Given the widespread use of Apple devices across European enterprises and government agencies, the potential for targeted attacks exploiting this vulnerability is significant.

The primary mitigation is to update all affected Apple devices to iOS and iPadOS version 18.1 or later, where the vulnerability is fixed. Organizations should enforce strict mobile device management (MDM) policies that restrict app installations to trusted sources such as the Apple App Store and prevent sideloading of untrusted applications. Regularly audit installed apps for suspicious behavior or permissions that could indicate exploitation attempts. Employ endpoint detection and response (EDR) solutions capable of monitoring anomalous memory or process behavior on iOS devices. Educate users about the risks of installing apps from unknown sources and the importance of timely updates. For high-security environments, consider additional controls such as app whitelisting and enhanced device encryption. Monitoring for unusual device crashes or instability may also help detect exploitation attempts. Finally, maintain an incident response plan that includes mobile device compromise scenarios to ensure rapid containment and remediation.