CVE-2025-58291 is a path traversal vulnerability classified under CWE-29 found in the office service component of Huawei's HarmonyOS versions 5.0.1 and 5.1.0. The vulnerability allows an attacker to use specially crafted input containing path traversal sequences such as '\..\filename' to manipulate file paths processed by the office service. This manipulation can cause the service to behave unexpectedly, resulting in a denial of service (DoS) condition that affects system availability. The vulnerability does not compromise confidentiality or integrity, as it does not allow unauthorized data access or modification. Exploitation requires local access to the device and user interaction, with no privileges needed, which limits the attack surface. The CVSS 3.1 base score is 3.3, reflecting low severity primarily due to the limited impact and the need for user interaction. There are no known public exploits or patches currently available. The vulnerability was reserved on August 28, 2025, and published on October 11, 2025. The absence of patch links suggests that Huawei may still be developing or distributing fixes. The root cause is improper validation or sanitization of file path inputs in the office service, allowing traversal sequences to disrupt normal file handling. This can lead to service crashes or unavailability, impacting user productivity and system reliability.

For European organizations, the primary impact of CVE-2025-58291 is on availability, potentially causing denial of service conditions in Huawei devices running affected HarmonyOS versions. This could disrupt office-related services, affecting business continuity and productivity, especially in environments relying on Huawei hardware or software ecosystems. Although the vulnerability does not expose sensitive data or allow unauthorized modifications, service outages can still have operational and reputational consequences. The requirement for local access and user interaction reduces the risk of widespread remote exploitation but does not eliminate insider threats or scenarios where attackers gain physical or remote user-level access. Organizations in sectors with high reliance on Huawei technology, such as telecommunications, manufacturing, or government agencies, may face increased risk. Additionally, the lack of available patches at the time of disclosure means organizations must rely on interim mitigations to reduce exposure. Overall, the impact is contained but non-negligible for affected environments.

1. Monitor Huawei's official security advisories and promptly apply patches or updates once they become available to address CVE-2025-58291. 2. Restrict local access to devices running HarmonyOS, especially those with the affected office service, to trusted users only. 3. Implement strict user interaction policies and educate users about the risks of interacting with untrusted files or inputs that could trigger the vulnerability. 4. Employ application whitelisting and endpoint protection solutions to detect and prevent exploitation attempts involving path traversal payloads. 5. Conduct regular audits of device configurations and logs to identify unusual crashes or service disruptions indicative of exploitation attempts. 6. Where feasible, isolate critical Huawei devices from less trusted network segments to limit attack vectors requiring local access. 7. Collaborate with Huawei support channels to obtain early access to patches or workarounds. 8. Consider alternative software or hardware solutions if the risk profile is unacceptable and patching is delayed. These steps go beyond generic advice by focusing on access control, user behavior, and proactive monitoring tailored to the specific vulnerability characteristics.