CVE-2025-11298 identifies a command injection vulnerability in the Belkin F9K1015 router firmware version 1.00.10. The vulnerability resides in an unspecified function handling the /goform/formSetWanStatic endpoint, specifically through the manipulation of the m_wan_ipaddr argument. This parameter is intended to set a static WAN IP address but can be exploited to inject and execute arbitrary system commands remotely. The attack vector is network-based, requiring no authentication or user interaction, which significantly lowers the barrier for exploitation. The CVSS 4.0 base score is 5.3 (medium), reflecting the moderate impact and ease of attack. The vulnerability affects the confidentiality, integrity, and availability of the device by potentially allowing attackers to take control, disrupt network traffic, or pivot into internal networks. The vendor was notified but has not issued patches or advisories, and no known exploits have been observed in the wild yet. The lack of vendor response and patch availability increases the urgency for organizations to implement compensating controls. The vulnerability is critical in environments where these routers are deployed as edge devices or in sensitive network segments.

For European organizations, exploitation of this vulnerability could lead to unauthorized remote control of affected routers, resulting in interception or manipulation of network traffic, disruption of internet connectivity, and potential lateral movement within corporate networks. This poses risks to data confidentiality, network integrity, and service availability. Organizations relying on Belkin F9K1015 devices for WAN connectivity or as part of critical infrastructure could face operational disruptions and data breaches. The absence of vendor patches means that attackers could exploit this vulnerability to establish persistent footholds or launch further attacks against internal systems. The impact is heightened in sectors such as finance, government, healthcare, and telecommunications, where network reliability and data protection are paramount.

Given the lack of official patches, European organizations should implement immediate compensating controls. These include disabling remote management interfaces on the Belkin F9K1015 devices to prevent external access to the vulnerable endpoint. Network segmentation should be enforced to isolate these routers from critical internal networks, limiting the blast radius of a compromise. Deploy strict firewall rules to restrict access to the /goform/formSetWanStatic endpoint and monitor network traffic for unusual requests targeting this path or suspicious command injection patterns. Regularly audit device configurations and logs for signs of exploitation attempts. Where possible, replace affected devices with updated models or alternative vendors that provide timely security updates. Additionally, organizations should maintain up-to-date network intrusion detection/prevention systems (IDS/IPS) tuned to detect command injection attempts. Finally, establish incident response plans specific to router compromise scenarios.