CVE-2025-64312 is a permission control vulnerability classified under CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) found in the file management module of Huawei's HarmonyOS. The flaw affects versions 5.0.1, 5.1.0, and 6.0.0 of the operating system. The vulnerability allows an attacker with network access and requiring user interaction but no prior privileges to potentially access sensitive information that should be protected by permission controls. The CVSS 3.1 base score is 4.9, reflecting a medium severity level, with the vector indicating that the attack vector is network-based (AV:P), has low attack complexity (AC:L), requires no privileges (PR:N), but does require user interaction (UI:R). The impact is primarily on confidentiality (C:H), with limited impact on integrity (I:L) and no impact on availability (A:N). No patches have been released yet, and no known exploits have been reported in the wild as of the publication date (November 28, 2025). The vulnerability could allow unauthorized actors to access sensitive files or data managed by the file management module, potentially leading to data leakage or privacy violations. Given the nature of the flaw, it is critical for organizations using affected HarmonyOS versions to monitor and prepare for remediation once patches become available.

For European organizations, the primary impact of CVE-2025-64312 is the potential unauthorized disclosure of sensitive information, which could include personal data, intellectual property, or confidential business information. This exposure could lead to privacy breaches, regulatory non-compliance (e.g., GDPR violations), reputational damage, and potential financial losses. Since the vulnerability requires user interaction and network access, targeted phishing or social engineering campaigns could be used to exploit it. The limited impact on integrity and availability reduces the risk of system disruption or data manipulation, but confidentiality breaches alone can have significant consequences, especially in sectors such as finance, healthcare, government, and critical infrastructure. Organizations relying on Huawei HarmonyOS devices for mobile or IoT deployments should be particularly vigilant, as these devices may be used to access or store sensitive corporate data.

1. Monitor Huawei’s official security advisories and apply patches promptly once they are released for the affected HarmonyOS versions (5.0.1, 5.1.0, 6.0.0). 2. Restrict network access to HarmonyOS devices, especially from untrusted or public networks, to reduce the attack surface. 3. Implement strict user awareness training to reduce the risk of social engineering or phishing attacks that could trigger the required user interaction for exploitation. 4. Employ endpoint detection and response (EDR) solutions capable of monitoring unusual file access patterns or permission escalations on HarmonyOS devices. 5. Use network segmentation to isolate critical systems and sensitive data from devices running vulnerable OS versions. 6. Enforce strong access controls and encryption on sensitive files managed by the file management module to add layers of protection beyond OS permissions. 7. Conduct regular audits of device configurations and permissions to detect and remediate potential misconfigurations that could exacerbate the vulnerability.