CVE-2025-58301 is a stack-based buffer overflow vulnerability identified in the device management module of Huawei's HarmonyOS, specifically affecting versions 5.0.1 and 5.1.0. The vulnerability arises from improper handling of input data in the device management component, leading to a buffer overflow on the stack. This flaw can be exploited by an attacker with local access to the device, without requiring any privileges or user interaction, making the attack vector local and relatively low in complexity. Successful exploitation results in a denial-of-service condition by corrupting the stack, which can cause the device management service or the entire system to crash, thereby impacting availability. The vulnerability does not compromise confidentiality or integrity, as it does not allow code execution or data leakage based on current information. No public exploits have been reported yet, and no patches are currently linked, indicating that mitigation relies on vendor updates and access control. The CVSS v3.1 base score is 6.2, reflecting medium severity, with the vector indicating local attack vector (AV:L), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), unchanged scope (S:U), no impact on confidentiality or integrity (C:N/I:N), and high impact on availability (A:H). This vulnerability is classified under CWE-121, which corresponds to stack-based buffer overflows, a common and well-understood class of vulnerabilities that can lead to crashes or potentially more severe impacts if exploited differently.

For European organizations, the primary impact of CVE-2025-58301 is on the availability of devices running affected versions of Huawei HarmonyOS, particularly those involved in device management functions. This can lead to denial-of-service conditions, disrupting operations in environments where HarmonyOS devices are deployed, such as telecommunications infrastructure, IoT ecosystems, and enterprise environments using Huawei hardware. The disruption could affect service continuity, leading to operational downtime and potential financial losses. Since the vulnerability requires local access, the risk is higher in environments where physical or local network access to devices is possible. Confidentiality and integrity are not directly impacted, reducing the risk of data breaches. However, availability issues in critical infrastructure could have cascading effects on dependent services. The absence of known exploits reduces immediate risk but does not eliminate the threat, especially as attackers may develop exploits over time. European organizations with Huawei device deployments should prioritize risk assessments and prepare for patching once updates are released.

1. Monitor Huawei's official security advisories and apply patches promptly once they become available for HarmonyOS versions 5.0.1 and 5.1.0. 2. Restrict local access to device management interfaces by enforcing strict physical security controls and network segmentation to limit exposure. 3. Implement robust access controls and authentication mechanisms for device management functions to prevent unauthorized local access. 4. Employ endpoint detection and response (EDR) solutions to monitor for abnormal behavior indicative of exploitation attempts. 5. Conduct regular security audits and vulnerability assessments on Huawei HarmonyOS devices within the network to identify and remediate potential weaknesses. 6. Educate staff on the risks of local access vulnerabilities and enforce policies to minimize unnecessary local device interactions. 7. Consider deploying network-level protections such as micro-segmentation to isolate critical devices and reduce attack surfaces. 8. Maintain up-to-date backups and incident response plans to quickly recover from potential denial-of-service incidents.