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 via the m_wan_ipaddr parameter. An attacker can remotely send crafted requests to this endpoint to inject and execute arbitrary system commands on the device. The attack vector requires no authentication or user interaction, making it remotely exploitable over the network. The vulnerability impacts the device's confidentiality, integrity, and availability by allowing full command execution, potentially enabling attackers to control the router, intercept or manipulate network traffic, or pivot into internal networks. The CVSS 4.0 score is 5.3 (medium), reflecting the ease of exploitation but limited scope or impact compared to more critical vulnerabilities. The vendor was notified but has not issued any patches or advisories, and no known exploits have been observed in the wild yet. The public disclosure of exploit details increases the risk of exploitation by threat actors. The lack of patch availability necessitates immediate defensive actions to mitigate risk.

The vulnerability allows remote attackers to execute arbitrary commands on affected Belkin F9K1015 routers, potentially leading to full compromise of the device. This can result in unauthorized access to internal networks, interception or manipulation of network traffic, disruption of network services, and use of the compromised router as a foothold for further attacks. Organizations relying on these routers for WAN connectivity or network perimeter defense may face data breaches, service outages, and lateral movement by attackers. The absence of authentication requirements and user interaction lowers the barrier for exploitation, increasing the threat to both home users and enterprise environments using this hardware. The impact extends to confidentiality, integrity, and availability of network communications and connected systems.

1. Immediately isolate affected Belkin F9K1015 routers from untrusted networks, especially the internet, to prevent remote exploitation. 2. Disable remote management interfaces and any WAN-facing services that expose the /goform/formSetWanStatic endpoint. 3. Implement strict firewall rules to restrict access to router management interfaces to trusted internal IP addresses only. 4. Monitor network traffic for unusual or suspicious requests targeting the vulnerable endpoint or abnormal command execution patterns. 5. Replace affected devices with routers from vendors with active security support if patches remain unavailable. 6. If replacement is not immediately feasible, consider deploying network segmentation to limit potential lateral movement from compromised routers. 7. Regularly check for vendor updates or community patches and apply them promptly once available. 8. Educate network administrators about this vulnerability and encourage vigilance for signs of compromise.