CVE-2025-10964 is a command injection vulnerability found in the Wavlink NU516U1 device, specifically within the /cgi-bin/firewall.cgi script's sub_401B30 function. The vulnerability arises due to improper sanitization or validation of the 'remoteManagementEnabled' parameter, which an attacker can manipulate to inject arbitrary commands. This flaw allows remote attackers to execute system-level commands without authentication or user interaction, as indicated by the CVSS vector (AV:N/AC:L/AT:N/UI:N/PR:L). The vulnerability is exploitable remotely over the network, making it a significant risk for exposed devices. Although the CVSS score is 5.3 (medium severity), the presence of publicly available exploits increases the threat level. The vendor, Wavlink, has not responded to disclosure attempts, and no patches or mitigations have been released at the time of publication. This vulnerability could be leveraged to gain unauthorized control over affected devices, potentially leading to network compromise, data exfiltration, or pivoting attacks within an organization's infrastructure. The lack of vendor response and patch availability heightens the urgency for organizations to implement alternative mitigations.

For European organizations, the impact of this vulnerability can be significant, especially for those using Wavlink NU516U1 devices in their network infrastructure. Successful exploitation could lead to unauthorized remote command execution, resulting in compromised device integrity and availability. Attackers could use the compromised device as a foothold to infiltrate internal networks, exfiltrate sensitive data, disrupt network services, or launch further attacks such as lateral movement or ransomware deployment. Given that the vulnerability requires low attack complexity and no user interaction, it poses a direct threat to network perimeter security. Organizations in sectors with high regulatory requirements (e.g., finance, healthcare, critical infrastructure) could face compliance violations and reputational damage if exploited. Additionally, the absence of vendor patches means organizations must rely on compensating controls, increasing operational overhead and risk exposure.

1. Immediate network segmentation: Isolate Wavlink NU516U1 devices from critical network segments to limit potential lateral movement if compromised. 2. Disable remote management features: If remote management is not essential, disable it entirely to remove the attack vector. 3. Implement strict firewall rules: Restrict access to the device's management interface to trusted IP addresses only. 4. Monitor network traffic: Deploy intrusion detection/prevention systems (IDS/IPS) to detect anomalous command injection attempts targeting the device. 5. Regularly audit device configurations and logs for signs of exploitation. 6. Consider replacing affected devices with alternative hardware from vendors with active security support if patching is unavailable. 7. Engage with Wavlink support channels persistently for updates or patches. 8. Employ network-level application firewalls or web application firewalls (WAFs) to filter malicious CGI requests targeting the vulnerable endpoint. These measures go beyond generic advice by focusing on network architecture changes, access control, and active monitoring tailored to this specific vulnerability and device.