CVE-2025-58312 is a permission control vulnerability classified under CWE-264 affecting Huawei's HarmonyOS App Lock module in versions 5.0.1, 5.1.0, and 6.0.0. The vulnerability arises from improper enforcement of permissions within the App Lock component, which is designed to restrict access to applications or system features. This flaw could allow an attacker with local access to bypass permission restrictions, potentially leading to unauthorized actions that impact system availability. The CVSS 3.1 vector (AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N) indicates that exploitation requires local access with high complexity, no privileges, and no user interaction, and primarily impacts confidentiality. However, the vulnerability description highlights availability impact, suggesting that exploitation might cause denial of service or resource exhaustion affecting system uptime. No known exploits are currently reported, and no patches have been released, indicating the vulnerability is newly disclosed. The vulnerability's presence in multiple HarmonyOS versions suggests a systemic issue in the App Lock module's permission handling. Given Huawei's significant market share in mobile and IoT devices, this vulnerability could affect a broad user base. The lack of authentication requirement and user interaction lowers the barrier for exploitation by local attackers, but the high attack complexity and local access requirement limit remote exploitation. This vulnerability underscores the importance of robust permission enforcement in OS security modules to prevent privilege escalation or denial of service scenarios.

For European organizations, the primary impact of CVE-2025-58312 lies in potential availability disruptions on devices running affected HarmonyOS versions. This could translate into denial of service conditions on Huawei smartphones, tablets, or IoT devices used within corporate environments, potentially affecting business continuity. Confidentiality impact indicated by the CVSS vector suggests possible unauthorized access to sensitive data, which could lead to data breaches if exploited. The requirement for local access limits remote exploitation risks but raises concerns for insider threats or scenarios where attackers gain physical or local network access. Organizations relying on Huawei devices for critical communications or operations may experience interruptions or degraded service. Additionally, the vulnerability could be leveraged in targeted attacks against high-value assets, especially in sectors like telecommunications, manufacturing, or government agencies where Huawei devices are prevalent. The absence of patches increases exposure duration, necessitating proactive risk management. Overall, the vulnerability could undermine trust in device security and complicate compliance with European data protection regulations if confidentiality or availability is compromised.

1. Restrict physical and local network access to Huawei devices running affected HarmonyOS versions to trusted personnel only. 2. Implement strict access controls and monitoring on devices to detect unusual App Lock behavior or permission escalations. 3. Employ endpoint detection and response (EDR) solutions capable of identifying anomalous local privilege abuse or denial of service attempts. 4. Isolate critical Huawei devices on segmented networks to limit lateral movement in case of compromise. 5. Educate users about the risks of local exploitation and enforce policies against unauthorized device access. 6. Monitor Huawei's security advisories closely and apply patches or firmware updates immediately upon release. 7. Consider deploying alternative security controls or device management solutions that can override or supplement App Lock protections. 8. Conduct regular security audits and penetration testing focusing on permission enforcement mechanisms within HarmonyOS environments. 9. Maintain incident response readiness to quickly address any exploitation attempts. 10. Collaborate with Huawei support channels for guidance on interim mitigations or workarounds.