NaCl plugins run with high system privileges. Outdated Dahua firmware combined with a deprecated plugin creates a massive attack surface. Hackers have exploited plugin-based web interfaces for years to gain access to camera networks.
To access Dahua devices on modern browsers (Chrome, Edge, Firefox) without relying on outdated ActiveX plugins, you can use the NACL (Native Client) Web Plugin plugin-free web interfaces. Method 1: Manual NACL Plugin Download (Chrome/Edge) nacl web plugin dahua download better
If your hardware is older and doesn't support a plugin-free firmware update, you can use Internet Explorer Mode within Microsoft Edge. Download Center - Dahua Security System NaCl plugins run with high system privileges