CVE-2025-64315 is a configuration defect vulnerability classified under CWE-264 (Permissions, Privileges, and Access Controls) found in the file management module of Huawei's HarmonyOS version 5.1.0. This vulnerability arises from improper configuration that allows unauthorized access to app data, potentially compromising its confidentiality and integrity. The CVSS 3.1 base score is 4.4 (medium severity), with an attack vector of local (AV:L), low attack complexity (AC:L), no privileges required (PR:N), but requiring user interaction (UI:R). The scope is unchanged (S:U), and the impact affects confidentiality and integrity partially (C:L/I:L) but not availability (A:N). This means an attacker with local access and the ability to trick a user into interaction could exploit the vulnerability to access or modify app data improperly. No patches are currently listed, and no known exploits exist in the wild, indicating the vulnerability is newly disclosed and not yet weaponized. The vulnerability's presence in the file management module suggests that the flaw could allow unauthorized file access or modification within apps, potentially leading to data leakage or tampering. The lack of privilege requirements increases the risk from unprivileged users or malicious apps on the device. However, the need for user interaction and local access limits remote exploitation and large-scale attacks. The vulnerability was reserved on 2025-10-30 and published on 2025-11-28, indicating recent discovery and disclosure.

For European organizations, the primary impact is the potential exposure or unauthorized modification of sensitive app data on Huawei devices running HarmonyOS 5.1.0. This could affect confidentiality and integrity of business-critical or personal data stored within apps, leading to data breaches or manipulation. Since exploitation requires local access and user interaction, the threat is more relevant to environments where devices may be physically accessible by attackers or where social engineering could be employed. Industries with high reliance on Huawei mobile devices, such as telecommunications, government, and enterprises with BYOD policies, may face increased risk. Data confidentiality breaches could lead to regulatory non-compliance under GDPR, resulting in fines and reputational damage. The vulnerability does not impact system availability, so denial-of-service is not a concern here. The absence of known exploits reduces immediate risk but does not eliminate the need for vigilance.

Organizations should monitor Huawei's official channels for patches addressing CVE-2025-64315 and apply updates promptly once available. Until patches are released, restrict physical and local access to devices running HarmonyOS 5.1.0, especially in sensitive environments. Implement strict user awareness training to reduce the risk of social engineering that could trigger user interaction required for exploitation. Employ mobile device management (MDM) solutions to enforce security policies, restrict installation of untrusted apps, and control file system permissions. Regularly audit devices for unauthorized apps or suspicious activity. Consider segmenting sensitive data within apps using encryption to limit impact if unauthorized access occurs. For critical deployments, evaluate the feasibility of temporarily limiting use of affected devices or downgrading to more secure versions if possible.