CVE-2025-58313 is a race condition vulnerability identified in Huawei's HarmonyOS, specifically within the device standby module. The vulnerability is classified under CWE-362, which involves concurrent execution using shared resources without proper synchronization. This flaw arises when multiple threads or processes access and manipulate shared resources simultaneously without adequate locking or coordination mechanisms, leading to unpredictable behavior. In this case, the improper synchronization can cause feature exceptions in the device standby module, potentially disrupting the normal standby operations of the device. The affected versions are HarmonyOS 5.0.1 and 5.1.0. According to the CVSS v3.1 scoring, the vulnerability has a score of 5.1 (medium severity), with the vector indicating that exploitation requires local access (AV:L), high attack complexity (AC:H), no privileges (PR:N), no user interaction (UI:N), unchanged scope (S:U), no impact on confidentiality or integrity (C:N, I:N), but high impact on availability (A:H). There are no known exploits in the wild at the time of publication, and no patches have been linked yet. The vulnerability could lead to denial of service or malfunctioning of the standby module, affecting device stability and power management functions.

For European organizations, the impact of this vulnerability depends largely on the deployment of Huawei devices running HarmonyOS within their infrastructure or employee devices. The device standby module is critical for power management and system stability; its malfunction could lead to increased power consumption, reduced device availability, or unexpected device behavior. In environments where Huawei HarmonyOS devices are used for critical communications, IoT deployments, or edge computing, this could degrade operational efficiency or cause interruptions. Although the vulnerability does not compromise confidentiality or integrity, the availability impact could disrupt business processes relying on these devices. Additionally, organizations with strict uptime and reliability requirements may face operational challenges. The requirement for local access and high attack complexity reduces the likelihood of remote exploitation but insider threats or physical access scenarios could still pose risks.

Given the nature of the vulnerability, European organizations should implement the following specific mitigations: 1) Monitor Huawei's official security advisories closely for patches or updates addressing this vulnerability and prioritize timely deployment once available. 2) Restrict physical and local access to devices running HarmonyOS to trusted personnel only, minimizing the risk of local exploitation. 3) Employ device management solutions to enforce strict access controls and monitor device behavior for anomalies related to standby or power management modules. 4) For critical environments, consider isolating or segmenting Huawei HarmonyOS devices to limit potential impact. 5) Conduct internal audits and penetration testing focusing on local access vectors to identify and remediate potential exploitation paths. 6) Educate staff about the risks of local exploitation and enforce policies to prevent unauthorized device access. These measures go beyond generic advice by focusing on access control, monitoring, and proactive patch management tailored to the vulnerability's characteristics.