SOUND4 IMPACT/FIRST/PULSE/Eco v2.x Unauthenticated Factory Reset Vulnerability

The impact of CVE-2023-53964 is severe due to the lack of authentication required to exploit it. An attacker can remotely trigger a factory reset on vulnerable devices simply by sending a crafted POST request to the /usr/cgi-bin/restorefactory.cgi endpoint. This reset wipes the device's configuration, effectively allowing the attacker to take over the device and reconfigure it for malicious purposes. The blast radius extends to any system relying on these devices, as compromised devices can be used as pivot points for further attacks within the network. This vulnerability is particularly concerning given the potential for widespread deployment of SOUND4 devices in critical infrastructure and industrial control systems.

Organizations utilizing SOUND4 IMPACT/FIRST/PULSE/Eco devices in industrial control systems, building automation, or any environment where device configuration is critical are at significant risk. Shared hosting environments where multiple customers share the same device infrastructure are also particularly vulnerable.

• linux / server: Monitor access logs for POST requests to /usr/cgi-bin/restorefactory.cgi from unexpected IP addresses. Use ss -lntp to identify processes listening on ports associated with the web server.

grep -i 'restorefactory.cgi' /var/log/apache2/access.log

• generic web: Use curl to test the endpoint and observe the response. A successful reset should be indicated by a change in device configuration.

curl -X POST http://<device_ip>/usr/cgi-bin/restorefactory.cgi

1. 2025-12-22Disclosure

   disclosure

1. 予約済み2025-12-19
2. 公開日2025-12-22
3. 更新日2026-01-16
4. EPSS 更新日2026-03-23

The primary mitigation for CVE-2023-53964 is to upgrade to a patched version of SOUND4 IMPACT/FIRST/PULSE/Eco as soon as it becomes available. Until a patch is released, consider isolating vulnerable devices from external networks to prevent unauthorized access. Implement strict network segmentation to limit the potential impact of a successful attack. Monitor network traffic for suspicious POST requests targeting the /usr/cgi-bin/restorefactory.cgi endpoint. Consider using a Web Application Firewall (WAF) to block requests to this endpoint, although this may impact legitimate functionality. Regularly review device configurations and access logs for any signs of unauthorized activity.