Ningyuanda TC155 CVE-2025-14748

No vendor-released patch is available; Shenzhen Ningyuanda Technology has not provided a firmware update for this vulnerability. Network-based mitigation is the primary control: restrict access to the TC155 device to trusted networks only by implementing network segmentation (place TC155 on isolated VLAN with access control lists limiting inbound traffic to authorized management hosts only). Disable ONVIF Device Management Service if not required for operational use, or implement firewall rules blocking external access to port associated with /onvif/device_service endpoint (typically port 8080 or 8000 depending on configuration). Change default ONVIF credentials if the device supports authentication, though the vulnerability indicates authentication may be bypassed. Monitor network traffic for POST/GET requests to /onvif/device_service containing 'FactoryDefault=Hard' parameter as an intrusion detection signature. If the device supports firmware updates, check Shenzhen Ningyuanda Technology's official support channels regularly for a patched firmware release, though the vendor's non-response suggests this may not occur.