CVE-2025-58316 is a denial-of-service vulnerability identified in Huawei's HarmonyOS, specifically within the video-related system service module. The root cause is a race condition (CWE-362) arising from improper synchronization when multiple concurrent executions access shared resources. This flaw allows an attacker with local access to trigger a state where the system service becomes unresponsive or crashes, leading to a denial of service. The vulnerability affects HarmonyOS versions 5.0.1, 5.1.0, and 6.0.0. The CVSS 3.1 base score is 7.3, indicating high severity, with an attack vector limited to local access (AV:L), low attack complexity (AC:L), no privileges required (PR:N), and no user interaction (UI:N). The impact primarily affects availability (A:H), with minor impacts on confidentiality and integrity (C:L, I:L). No public exploits are known, and no patches have been linked yet. The vulnerability highlights the risks of concurrency issues in system-level services, especially in multimedia components that are often complex and resource-intensive. Exploiting this vulnerability could disrupt video services on affected devices, impacting user experience and potentially critical communications or surveillance functions relying on video.

For European organizations, the primary impact is on availability of Huawei HarmonyOS devices running vulnerable versions, particularly those relying on video-related system services. This could affect sectors using Huawei devices for video conferencing, surveillance, or multimedia processing, leading to service interruptions and operational disruptions. Critical infrastructure or enterprises using Huawei mobile or IoT devices with HarmonyOS may experience degraded service or downtime. Although confidentiality and integrity impacts are low, the denial of service could indirectly affect business continuity and user trust. The requirement for local access limits remote exploitation, but insider threats or compromised local devices could leverage this vulnerability. The absence of known exploits reduces immediate risk but does not eliminate future threat potential once exploit code becomes available.

1. Monitor Huawei’s official security advisories for patches addressing CVE-2025-58316 and apply them promptly upon release. 2. Restrict local access to devices running vulnerable HarmonyOS versions by enforcing strict physical and logical access controls, including device lock policies and user authentication. 3. Implement endpoint security solutions that can detect anomalous behavior in system services, particularly those related to video processing. 4. Conduct regular audits of devices to ensure they are running supported and updated OS versions. 5. For critical deployments, consider network segmentation to isolate vulnerable devices from sensitive systems. 6. Educate users and administrators about the risks of local exploitation and encourage reporting of unusual device behavior. 7. If possible, disable or limit video-related system services on devices where such functionality is not required to reduce attack surface.