CVE-2025-58314 is a medium-severity vulnerability identified in Huawei's HarmonyOS, spanning versions 2.0.0 through 6.0.0. The root cause is an out-of-bounds read (CWE-125) in a component driver module, where the system improperly accesses invalid memory locations. This flaw can lead to the leakage of sensitive information (confidentiality impact) and may cause partial degradation of system availability due to memory corruption or crashes. The vulnerability requires an attacker to have local access with low privileges (PR:L) but does not require user interaction (UI:N). The attack vector is local (AV:L), meaning exploitation is limited to users or processes with some level of access to the device. The CVSS v3.1 score of 6.6 reflects the high confidentiality impact, low integrity impact, and low availability impact. No public exploits or patches are currently available, indicating that while the vulnerability is known, exploitation in the wild has not been observed. The affected component is a driver module, which often operates at a low level in the OS, increasing the risk that exploitation could bypass some security controls. Given Huawei's significant deployment of HarmonyOS in IoT devices, smartphones, and telecom equipment, this vulnerability could be leveraged to extract sensitive data or cause service interruptions in affected devices. The lack of user interaction requirement and low privilege needed for exploitation mean that insider threats or compromised local accounts could potentially exploit this vulnerability. Organizations should monitor for suspicious local activity and prepare to apply patches once released by Huawei.

For European organizations, the primary impact of CVE-2025-58314 lies in potential confidentiality breaches and partial availability disruptions of devices running HarmonyOS. This is particularly critical for sectors relying on Huawei hardware and software, such as telecommunications providers, IoT device manufacturers, and enterprises using Huawei smartphones or embedded systems. Confidentiality impact could lead to leakage of sensitive corporate or personal data, undermining privacy and compliance with regulations like GDPR. Availability impact, though rated low, could disrupt critical services or device functionality, affecting operational continuity. Given the local attack vector and low privilege requirement, insider threats or attackers with limited access could exploit this vulnerability, increasing risk in environments with shared device usage or insufficient access controls. The absence of known exploits reduces immediate risk but also means organizations must proactively prepare defenses. The vulnerability could also be leveraged as part of a multi-stage attack chain, escalating impact beyond the initial local scope. Overall, European organizations with Huawei HarmonyOS deployments face moderate risk that warrants attention due to potential data exposure and service degradation.

1. Implement strict local access controls and user privilege management on devices running HarmonyOS to limit opportunities for exploitation. 2. Monitor system logs and behavior for anomalous local memory access patterns or crashes related to driver modules. 3. Enforce network segmentation to isolate Huawei HarmonyOS devices, reducing risk from compromised local accounts spreading laterally. 4. Prepare incident response plans specifically addressing potential memory corruption or data leakage scenarios on affected devices. 5. Engage with Huawei support channels to obtain timely security updates or patches once they become available. 6. Conduct regular security audits and vulnerability scans on HarmonyOS devices to detect unpatched vulnerabilities. 7. Educate users and administrators about the risks of local privilege misuse and encourage strong authentication mechanisms. 8. Where possible, limit installation of untrusted applications or drivers that could exploit the vulnerability. 9. Consider deploying endpoint detection and response (EDR) tools capable of identifying exploitation attempts targeting memory vulnerabilities. 10. Maintain up-to-date backups of critical data and configurations to enable recovery in case of availability impact.