CVE-2025-58303 is a vulnerability classified under CWE-362, indicating a race condition due to concurrent execution using shared resources with improper synchronization within Huawei's HarmonyOS screen recording framework. Specifically, this flaw manifests as a use-after-free (UAF) vulnerability, where memory is accessed after it has been freed, potentially leading to undefined behavior including crashes or arbitrary code execution. The vulnerability affects multiple versions of HarmonyOS (5.0.1, 5.1.0, and 6.0.0). The CVSS v3.1 score of 8.4 reflects a high-severity issue with an attack vector requiring local access (AV:L), low attack complexity (AC:L), no privileges required (PR:N), and no user interaction (UI:N). The scope is unchanged (S:U), but confidentiality, integrity, and availability impacts are all rated high (C:H/I:H/A:H). This means exploitation could lead to full compromise of the affected system's data and operational stability. The vulnerability arises from improper synchronization in concurrent operations within the screen recording module, allowing race conditions that result in use-after-free scenarios. Although no public exploits are known yet, the nature of the flaw makes it a critical concern for devices running the affected HarmonyOS versions. The lack of available patches at the time of publication increases the urgency for mitigation and monitoring.

For European organizations, the impact of CVE-2025-58303 could be substantial, especially for those relying on Huawei devices running HarmonyOS in critical roles such as telecommunications infrastructure, government agencies, and enterprises with mobile device fleets. Successful exploitation could allow attackers to compromise device confidentiality, integrity, and availability, potentially leading to data leakage, unauthorized control, or denial of service. Given the local attack vector, physical or local network access might be required, but the absence of required privileges or user interaction lowers the barrier for attackers with some access. This vulnerability could disrupt business operations, compromise sensitive communications, and undermine trust in Huawei-based systems. The impact is amplified in sectors where device availability and data integrity are paramount, such as emergency services, financial institutions, and critical infrastructure providers.

Mitigation should focus on immediate and specific actions beyond generic advice. First, Huawei must prioritize releasing security patches for the affected HarmonyOS versions to address the race condition and UAF flaw. Organizations should monitor Huawei's security advisories closely and apply updates as soon as they become available. Until patches are released, restrict access to devices running vulnerable HarmonyOS versions, especially limiting local access and network exposure to trusted users and networks only. Employ endpoint detection and response (EDR) tools to monitor for anomalous behavior indicative of exploitation attempts targeting the screen recording framework. Disable or restrict the use of screen recording features on vulnerable devices if feasible, to reduce attack surface. Conduct thorough audits of device usage policies and ensure that devices are not exposed to untrusted environments. Additionally, implement network segmentation to isolate critical Huawei devices and enforce strict access controls. Finally, educate users about the risks and signs of device compromise related to this vulnerability.