CVE-2026-2071 identifies a critical buffer overflow vulnerability in the UTT 进取 520W device version 1.7.7-180627. The vulnerability exists in the strcpy function used in the /goform/formP2PLimitConfig endpoint, where improper handling of input arguments allows an attacker to overflow the buffer. This classic memory corruption flaw can be exploited remotely without authentication or user interaction, making it highly dangerous. The overflow can lead to arbitrary code execution, enabling attackers to take full control of the device, disrupt services, or exfiltrate sensitive data. The vulnerability has a CVSS 4.0 base score of 8.7, reflecting its high impact on confidentiality, integrity, and availability, combined with ease of exploitation. Despite early vendor notification, no patches or mitigations have been provided, and a public exploit is available, increasing the risk of active exploitation. The affected product is a network device likely used in specific industrial or enterprise environments, which may be critical infrastructure components. The lack of vendor response and public exploit availability heightens the urgency for organizations to implement compensating controls.

For European organizations, exploitation of this vulnerability could lead to severe consequences including unauthorized remote control of affected devices, disruption of network services, data breaches, and potential lateral movement within internal networks. Given that the device is a network appliance, compromise could undermine network perimeter defenses or critical operational technology environments. Confidentiality could be breached through data interception or exfiltration, integrity compromised by malicious configuration changes, and availability impacted by denial-of-service conditions or device takeover. The absence of vendor patches means organizations must rely on network-level mitigations and monitoring to prevent exploitation. Industries such as manufacturing, utilities, or telecommunications using UTT 进取 520W devices are particularly at risk, potentially affecting critical infrastructure and services across Europe.

1. Immediately identify and inventory all UTT 进取 520W devices running version 1.7.7-180627 within the network. 2. Isolate affected devices from untrusted networks or restrict access to the /goform/formP2PLimitConfig endpoint via firewall rules or network segmentation. 3. Implement strict input validation and intrusion detection/prevention systems (IDS/IPS) to detect and block exploit attempts targeting this vulnerability. 4. Monitor network traffic for anomalous activity related to the vulnerable endpoint or unexpected remote connections to affected devices. 5. Employ network-level access controls such as VPNs or zero-trust models to limit exposure. 6. Engage with UTT or authorized vendors for any unofficial patches or workarounds and maintain communication for future updates. 7. Prepare incident response plans specifically addressing potential exploitation scenarios of this vulnerability. 8. Consider device replacement if patching or mitigation is not feasible in the short term.