CVE-2025-58286 is a path traversal vulnerability classified under CWE-25, found in the office service component of Huawei HarmonyOS versions 5.0.1 and 5.1.0. The vulnerability arises from improper validation of file paths, specifically the handling of '/../filedir' sequences, which can be manipulated to access unintended directories or files. While the primary impact is a denial of service (DoS), the vulnerability does not affect confidentiality or integrity of data. The CVSS 3.1 base score is 3.3, indicating low severity, with the vector AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L. This means the attack requires local access (AV:L), low attack complexity (AC:L), no privileges (PR:N), and user interaction (UI:R). The scope is unchanged (S:U), and only availability is impacted (A:L). Exploitation involves triggering the office service to process crafted file paths that cause service disruption. No known exploits are currently reported in the wild, and no patches have been released yet. The vulnerability could be leveraged by local attackers or malicious users with access to the device to disrupt office service availability, potentially impacting productivity and operational continuity. Given the nature of HarmonyOS as an operating system used in Huawei devices, the vulnerability could affect a range of devices including smartphones, tablets, and IoT devices running the affected versions. The path traversal aspect suggests the vulnerability could be used to access or manipulate file system locations beyond intended boundaries, but in this case, the impact is limited to denial of service rather than data breach or code execution.

For European organizations, the primary impact of CVE-2025-58286 is on availability of office services running on Huawei HarmonyOS devices. Disruption of these services could affect business operations, especially in environments where Huawei devices are integrated into workflows or critical communication systems. Although the vulnerability does not compromise data confidentiality or integrity, denial of service can lead to productivity losses, delayed operations, and potential reputational damage if service outages affect customer-facing functions. Organizations with a high density of Huawei devices or those using HarmonyOS in enterprise contexts may experience localized disruptions. The requirement for local access and user interaction limits the attack surface, reducing risk from remote attackers but increasing concern for insider threats or compromised users. The absence of known exploits and patches means organizations must rely on preventive controls and monitoring until vendor fixes are available. Given the low CVSS score, the threat is not critical but should be addressed proactively to maintain service reliability.

1. Restrict local access to Huawei HarmonyOS devices, ensuring only trusted users can interact with the office service. 2. Implement strict user privilege management to minimize the risk of unprivileged users triggering the vulnerability. 3. Monitor system logs and file access patterns for anomalous usage of file paths containing '/../' sequences or other suspicious traversal attempts. 4. Educate users about the risk of interacting with untrusted content or applications that might exploit the vulnerability. 5. Deploy endpoint detection and response (EDR) solutions capable of detecting abnormal process behavior related to the office service. 6. Maintain an inventory of Huawei HarmonyOS devices and track their OS versions to identify those affected. 7. Follow Huawei security advisories closely and apply patches or updates promptly once available. 8. Consider network segmentation to isolate critical systems from devices running vulnerable versions. 9. Use application whitelisting to prevent unauthorized execution of potentially malicious code that could exploit the vulnerability. 10. Conduct periodic security assessments focusing on local access controls and user interaction vectors relevant to this vulnerability.