CVE-2025-11652 identifies a remote buffer overflow vulnerability in the UTT 进取 518G device firmware versions up to V3v3.2.7-210919-161313. The vulnerability is triggered by sending a specially crafted request to the /goform/formTaskEdit_ap endpoint, specifically manipulating the txtMin2 parameter, which is improperly processed and leads to a buffer overflow condition. This flaw allows an unauthenticated attacker to remotely execute arbitrary code on the device with elevated privileges, potentially leading to full system compromise. The vulnerability does not require user interaction and can be exploited over the network, increasing its risk profile. The CVSS 4.0 score of 8.7 reflects the high impact on confidentiality, integrity, and availability, combined with low attack complexity and no authentication requirement. Although no confirmed exploits are currently active in the wild, a public proof-of-concept exploit exists, increasing the likelihood of future attacks. The vendor was notified early but has not issued any patches or advisories, leaving users exposed. The affected product is a networking device commonly used in certain markets, and the lack of patch availability necessitates alternative mitigation strategies. This vulnerability could be leveraged by attackers to disrupt network operations, intercept or manipulate sensitive data, or establish persistent footholds within affected environments.

For European organizations, the exploitation of CVE-2025-11652 could result in severe operational disruptions, data breaches, and loss of control over critical network infrastructure. Given the device's role in network management or connectivity, a successful attack could enable attackers to intercept confidential communications, manipulate network traffic, or launch further attacks within the internal network. This could impact sectors such as telecommunications, manufacturing, government, and critical infrastructure where UTT devices are deployed. The high severity and remote exploitability without authentication make this vulnerability particularly dangerous for organizations lacking robust network segmentation or monitoring. Additionally, the absence of vendor patches increases the risk of prolonged exposure. Organizations may face regulatory and compliance challenges if the vulnerability leads to data breaches or service outages, especially under GDPR and other European cybersecurity regulations. The potential for widespread impact is heightened in countries with significant deployments of UTT 进取 518G devices or related infrastructure.

1. Immediately identify and inventory all UTT 进取 518G devices running vulnerable firmware versions within the network. 2. Implement strict network segmentation to isolate affected devices from critical systems and sensitive data flows. 3. Restrict access to the /goform/formTaskEdit_ap endpoint using firewall rules or access control lists to limit exposure to trusted management networks only. 4. Monitor network traffic and device logs for unusual or malformed requests targeting the txtMin2 parameter or the vulnerable endpoint. 5. Disable or restrict remote management interfaces where possible to reduce attack surface. 6. Employ intrusion detection/prevention systems (IDS/IPS) with signatures or heuristics capable of detecting exploitation attempts against this vulnerability. 7. Engage with UTT or authorized resellers to seek firmware updates or official patches; if unavailable, consider device replacement or vendor alternatives. 8. Develop and test incident response plans specifically addressing potential exploitation scenarios of this vulnerability. 9. Educate network administrators and security teams about the vulnerability and signs of exploitation. 10. Regularly review and update network security policies to incorporate compensating controls until a patch is available.