CVE-2025-15429 identifies a critical buffer overflow vulnerability in the UTT 进取 512W device firmware version 1.7.7-171114. The vulnerability arises from improper handling of the addCommand argument passed to the strcpy function in the /goform/formConfigCliForEngineerOnly endpoint. Since strcpy does not perform bounds checking, an attacker can supply an overly long input to overflow the buffer, potentially overwriting adjacent memory. This can lead to arbitrary code execution or cause the device to crash, resulting in denial of service. The vulnerability is remotely exploitable without requiring authentication or user interaction, making it highly accessible to attackers. The CVSS 4.0 score of 8.7 reflects its high impact on confidentiality, integrity, and availability, with low attack complexity and no privileges needed. Although the vendor was contacted early, no patch or mitigation guidance has been issued, and a public exploit has been disclosed, increasing the likelihood of exploitation. The affected product is a networking device, likely used in enterprise or industrial environments, which could serve as a critical infrastructure component. This vulnerability could be leveraged by attackers to gain persistent access, disrupt network operations, or pivot into internal networks.

For European organizations, exploitation of CVE-2025-15429 could lead to severe operational disruptions, data breaches, and loss of control over critical network infrastructure. The ability to execute arbitrary code remotely without authentication means attackers can compromise devices to intercept or manipulate sensitive communications, disrupt services, or launch further attacks within the network. This is particularly concerning for sectors relying on UTT 进取 512W devices for connectivity, such as manufacturing, telecommunications, and government agencies. The lack of vendor response and available exploit code increases the risk of widespread attacks. Additionally, compromised devices could be used as entry points for espionage or sabotage, especially in countries with strategic industries or critical infrastructure. The impact extends beyond individual organizations to national cybersecurity posture and supply chain security.

Given the absence of an official patch, European organizations should implement immediate compensating controls. These include isolating UTT 进取 512W devices on dedicated network segments with strict firewall rules limiting access to management interfaces. Employ network intrusion detection and prevention systems to monitor and block suspicious traffic targeting the /goform/formConfigCliForEngineerOnly endpoint. Disable or restrict remote management capabilities where possible. Conduct regular network scans to identify vulnerable devices and assess exposure. Implement strict access controls, including VPNs with multi-factor authentication for any remote access. Maintain up-to-date asset inventories to quickly identify affected devices. Engage with UTT or third-party security vendors for potential unofficial patches or firmware updates. Finally, prepare incident response plans specifically addressing exploitation scenarios of this vulnerability.