CVE-2025-15429 is a buffer overflow vulnerability identified in the UTT 进取 512W device running firmware version 1.7.7-171114. The vulnerability arises from unsafe use of the strcpy function in the /goform/formConfigCliForEngineerOnly endpoint, specifically when processing the addCommand parameter. Because strcpy does not perform bounds checking, an attacker can supply an overly long input to overflow the buffer, corrupting adjacent memory. This can lead to arbitrary code execution or device crash. The vulnerability is remotely exploitable without authentication or user interaction, increasing its risk profile. The vendor was informed early but has not issued any patch or mitigation guidance. The vulnerability has been publicly disclosed, increasing the likelihood of exploitation. The CVSS 4.0 score of 8.7 reflects the high impact on confidentiality, integrity, and availability, with low attack complexity and no privileges required. The affected product is primarily used in networking contexts, potentially in enterprise or telecom environments. Given the lack of vendor response, organizations must rely on compensating controls to mitigate risk.

For European organizations, this vulnerability poses a significant threat to network infrastructure security and operational continuity. Exploitation could allow attackers to execute arbitrary code on affected devices, potentially gaining control over network traffic, intercepting sensitive communications, or disrupting services. This is particularly critical for sectors such as telecommunications, government networks, and critical infrastructure operators that may deploy UTT 进取 512W devices. The lack of vendor patches increases the risk of successful exploitation and prolonged exposure. Confidentiality breaches could lead to data leaks, while integrity and availability impacts could disrupt business operations and critical services. The remote and unauthenticated nature of the exploit makes it accessible to a wide range of threat actors, including nation-state and cybercriminal groups targeting European networks.

Given the absence of an official patch, European organizations should implement the following specific mitigations: 1) Immediately isolate or segment networks containing UTT 进取 512W devices to limit exposure to untrusted networks. 2) Deploy strict firewall rules to restrict access to the /goform/formConfigCliForEngineerOnly endpoint, allowing only trusted management IPs. 3) Monitor network traffic for anomalous requests targeting the addCommand parameter or unusual payload sizes indicative of buffer overflow attempts. 4) Employ intrusion detection/prevention systems (IDS/IPS) with signatures or heuristics for buffer overflow attacks against this device. 5) Where feasible, replace or upgrade affected devices to alternative products without this vulnerability. 6) Conduct regular security audits and vulnerability scans focusing on UTT devices to detect potential exploitation. 7) Educate network administrators about this vulnerability and the importance of monitoring and restricting remote management interfaces. 8) Maintain robust incident response plans to quickly address any detected exploitation attempts.