CVE-2025-58312 identifies a permissions and access control vulnerability (CWE-264) within the App Lock module of Huawei's HarmonyOS, specifically affecting versions 5.0.1, 5.1.0, and 6.0.0. The vulnerability arises from improper enforcement of permission controls, which could allow an attacker with local access to bypass restrictions intended to protect application locking mechanisms. Although the CVSS vector indicates a local attack vector (AV:L) with high attack complexity (AC:H), no privileges (PR:N) or user interaction (UI:N) are required, meaning an attacker without prior authentication but with local access could attempt exploitation. The impact is primarily on availability, suggesting that successful exploitation could disrupt the normal operation of the App Lock module or related system components, potentially causing denial of service or preventing users from accessing locked applications. The vulnerability does not affect confidentiality or integrity directly but may degrade system usability and trust. No public exploits are known at this time, and Huawei has not yet published patches, indicating the need for vigilance. The vulnerability was reserved in August 2025 and published in November 2025, reflecting a recent disclosure. The App Lock module is a security feature designed to restrict access to applications, so flaws here can undermine user security controls. Given the high attack complexity and local access requirement, exploitation is less trivial but remains a concern for environments where local access can be gained by attackers or malicious insiders.

For European organizations, the primary impact of CVE-2025-58312 is potential disruption of availability in devices running affected HarmonyOS versions. This could manifest as denial of service conditions on Huawei mobile devices or IoT endpoints that rely on the App Lock module for application access control. Organizations using Huawei smartphones or embedded systems in operational technology or enterprise environments may experience reduced productivity or security posture degradation if attackers exploit this vulnerability to disable or bypass app locking. Although confidentiality and integrity are not directly impacted, availability issues can lead to operational interruptions and increased risk exposure. The requirement for local access limits remote exploitation risk but raises concerns in scenarios involving insider threats, physical device theft, or compromised endpoints within secure perimeters. European entities with Huawei device deployments in critical infrastructure, telecommunications, or government sectors could face heightened risk due to the strategic importance of these systems and potential for targeted attacks. The lack of known exploits reduces immediate risk but does not eliminate the threat, especially as attackers may develop exploits post-disclosure.

1. Monitor Huawei security advisories closely and apply official patches promptly once released to address CVE-2025-58312. 2. Restrict physical and local access to devices running affected HarmonyOS versions, enforcing strict device control policies to prevent unauthorized local exploitation. 3. Implement endpoint security solutions capable of detecting anomalous local activity that may indicate exploitation attempts targeting the App Lock module. 4. Educate users and administrators on the risks of local access vulnerabilities and enforce strong device lock and authentication mechanisms to reduce attack surface. 5. For organizations deploying Huawei devices in sensitive environments, consider network segmentation and device isolation to limit the impact of potential availability disruptions. 6. Conduct regular security audits and penetration testing focusing on local privilege escalation and access control weaknesses to identify and remediate similar issues proactively. 7. Maintain an inventory of Huawei devices and their OS versions to prioritize patching and risk management efforts effectively.