CVE-2025-15472 is an OS command injection vulnerability identified in TRENDnet TEW-811DRU routers running firmware version 1.0.2.0. The vulnerability resides in the setDeviceURL function of the uapply.cgi script, part of the device's embedded HTTP server (httpd). Specifically, the DeviceURL parameter is improperly sanitized, allowing an attacker to inject arbitrary operating system commands. This flaw can be exploited remotely without requiring user interaction, but it does require the attacker to have high privileges, which implies some form of prior access or credential compromise. The vulnerability has been assigned a CVSS 4.0 base score of 8.6, reflecting its high impact on confidentiality, integrity, and availability. The vendor was contacted but has not issued any patch or mitigation guidance, increasing the risk of exploitation. Although no known exploits are currently observed in the wild, proof-of-concept code has been published, raising the likelihood of future attacks. The flaw could allow attackers to execute arbitrary commands on the device, potentially leading to full device compromise, network pivoting, data exfiltration, or denial of service. The lack of authentication bypass means that attackers must already have elevated privileges, but the remote exploitability and absence of user interaction requirements make this vulnerability particularly dangerous in environments where the device is exposed or credentials are weak. The TEW-811DRU is used in various enterprise and small business networks, making this a significant threat to network security.

For European organizations, this vulnerability poses a substantial risk, especially for those relying on TRENDnet TEW-811DRU devices in their network infrastructure. Successful exploitation could lead to unauthorized command execution, resulting in data breaches, network disruption, or lateral movement within corporate networks. This could compromise sensitive information, disrupt business operations, and damage organizational reputation. Critical infrastructure sectors such as finance, healthcare, and government agencies using these devices are particularly vulnerable. The high CVSS score reflects the potential for severe confidentiality, integrity, and availability impacts. Additionally, the absence of vendor patches increases the window of exposure, making timely mitigation essential. The threat is exacerbated in environments where remote management interfaces are exposed to the internet or where credential hygiene is poor. European organizations must consider the risk of targeted attacks exploiting this vulnerability, especially given geopolitical tensions that may motivate adversaries to exploit such weaknesses in critical networks.

Given the lack of an official patch from TRENDnet, European organizations should implement immediate compensating controls. First, disable remote management interfaces on the TEW-811DRU devices to prevent external access to the vulnerable HTTP endpoint. Second, segment networks to isolate these devices from critical assets and limit lateral movement if compromise occurs. Third, enforce strong credential policies and rotate any default or weak passwords to reduce the risk of privilege escalation. Fourth, deploy network intrusion detection systems (NIDS) or web application firewalls (WAF) to monitor and block suspicious HTTP requests targeting the uapply.cgi endpoint with malicious DeviceURL parameters. Fifth, conduct regular firmware audits and consider replacing affected devices with models from vendors that provide timely security updates. Finally, maintain vigilant monitoring of network logs for unusual command execution patterns or device behavior indicative of exploitation attempts. Organizations should also prepare incident response plans specific to this vulnerability to rapidly contain and remediate any breaches.