CVE-2025-4980 is an information disclosure vulnerability identified in the Netgear DGND3700 router, specifically affecting firmware version 1.1.00.15_1.00.15NA. The vulnerability resides in the mini_http component, within the /currentsetting.htm file. An attacker can remotely exploit this flaw without requiring authentication or user interaction, by manipulating requests to the affected endpoint. Successful exploitation leads to the disclosure of sensitive information stored or processed by the device, potentially including configuration details, network settings, or other data that could facilitate further attacks. The vulnerability has a CVSS 4.0 base score of 6.9, indicating a medium severity level. The attack vector is network-based with low attack complexity and no privileges or user interaction needed, but the impact is limited to information disclosure without direct integrity or availability consequences. Although the exploit has been publicly disclosed, there are no known active exploits in the wild at this time. The vendor was notified early, but no official patch or mitigation guidance is currently provided. Other Netgear products may also be vulnerable, but this has not been confirmed. The vulnerability's disclosure highlights the risk posed by embedded web interfaces in consumer-grade network devices, which often lack robust security controls and can expose sensitive internal data if improperly secured.

For European organizations, this vulnerability poses a moderate risk primarily to network infrastructure security. The Netgear DGND3700 is a consumer and small office/home office (SOHO) router, so its presence in enterprise environments may be limited but not negligible in small branch offices or home workers' setups. Information disclosure could allow attackers to gather configuration details, such as network topology, credentials, or device settings, which can be leveraged for lateral movement, targeted attacks, or further exploitation of network assets. This risk is heightened in organizations relying on remote or hybrid work models where such devices are deployed outside traditional perimeter defenses. Additionally, disclosure of sensitive configuration data could violate data protection regulations like GDPR if it leads to unauthorized access to personal or corporate data. The absence of authentication and user interaction requirements increases the likelihood of exploitation, especially if the device is exposed to the internet or untrusted networks. However, the impact is limited to confidentiality loss without direct disruption of services or data integrity compromise.

Organizations should first identify any Netgear DGND3700 devices running the affected firmware version within their network, including remote or home office environments. Immediate mitigation steps include restricting access to the device's web interface by implementing network segmentation and firewall rules to block external access to the router's management interface, especially from the internet. Where possible, disable remote management features or change default management ports to reduce exposure. Network administrators should monitor network traffic for suspicious requests targeting /currentsetting.htm or unusual HTTP activity on the router. Since no official patch is currently available, consider upgrading to newer firmware versions if and when Netgear releases a fix. Alternatively, replacing vulnerable devices with more secure models may be warranted in high-risk environments. Employing VPNs for remote access and enforcing strong authentication on network devices can further reduce exploitation risk. Finally, educating users about the risks of exposing home or SOHO routers to the internet and encouraging secure configuration practices is essential.