CVE-2025-64314 is a critical security vulnerability identified in Huawei's HarmonyOS version 5.1.0, classified under CWE-843 (Access of Resource Using Incompatible Type, commonly known as type confusion). This flaw resides in the memory management module, where improper permission control allows an attacker to exploit type confusion to access resources incorrectly. Type confusion vulnerabilities occur when a program accesses a resource using a type different from the one it was intended for, potentially leading to memory corruption, unauthorized data access, or execution of arbitrary code. In this case, the vulnerability enables an attacker with local access to bypass permission checks, thereby gaining unauthorized access to sensitive memory regions. The CVSS v3.1 score of 9.3 (critical) reflects the vulnerability's high impact on confidentiality, integrity, and availability, combined with low attack complexity, no required privileges, and no user interaction. The scope is changed (S:C), indicating that exploitation can affect resources beyond the initially vulnerable component. Although no public exploits have been reported yet, the vulnerability's nature and severity make it a prime target for attackers aiming to compromise HarmonyOS devices. Huawei has not yet released a patch, emphasizing the need for vigilance and interim protective measures.

For European organizations, the exploitation of CVE-2025-64314 could result in severe consequences including unauthorized disclosure of sensitive information, manipulation or deletion of critical data, and disruption of device availability. Given HarmonyOS's deployment in various Huawei smartphones, IoT devices, and potentially enterprise environments, compromised devices could serve as entry points for broader network intrusions or espionage. Confidentiality breaches could expose personal data, intellectual property, or strategic information, particularly impacting sectors such as telecommunications, government, finance, and critical infrastructure. The ability to exploit this vulnerability without privileges or user interaction increases the risk of widespread attacks, especially in environments where devices are shared or physically accessible. The critical severity underscores the potential for significant operational and reputational damage to European entities relying on Huawei technology.

1. Monitor Huawei's official channels for patches addressing CVE-2025-64314 and apply updates immediately upon release. 2. Restrict physical and local access to HarmonyOS devices within organizational premises to trusted personnel only. 3. Employ device management solutions to enforce strict access controls and monitor for anomalous behavior indicative of exploitation attempts. 4. Conduct regular security audits and penetration testing focusing on devices running HarmonyOS to identify potential exploitation vectors. 5. Segment networks to isolate vulnerable devices, limiting lateral movement in case of compromise. 6. Educate users about the risks of unauthorized device access and enforce policies to prevent installation of untrusted applications that might facilitate exploitation. 7. Collaborate with Huawei support for guidance on interim mitigations or configuration changes that can reduce exposure until patches are available.