In 2016, the Mirai botnet took down major parts of the internet (Netflix, Twitter, Reddit) by hacking into thousands of IoT devices, including Dahua DVRs, that were still using factory default passwords. Hackers continuously scan the internet for IP addresses that host Dahua DVRs on port 37777 (the default Dahua port) and try admin/admin .
Regular firmware updates are crucial for security. Dahua recommends updating your NVR, DVR, and IP camera firmware to ensure your system has the latest security patches and fixes. If the firmware release date is over 18 months old, contact a local distributor or technical support for available updates.
Dahua DVRs come with several pre-configured user accounts, each with a specific role. The official Dahua Wiki lists the following default accounts: dahua dvr default password
For devices manufactured before 2019, or those with older firmware, the default login is:
on a computer connected to the same network to initiate a remote password reset. For further assistance, you can consult the official for model-specific manuals and troubleshooting steps. Do you have physical access In 2016, the Mirai botnet took down major
Dahua explicitly recommends and encourages users to “change default passwords immediately” after initial login. The company also suggests additional best practices:
If the default passwords do not work, you must initiate a password reset. Dahua provides several methods for this, depending on the model and firmware version. Method 1: The "Forgot Password" Prompt (Recommended) Dahua recommends updating your NVR, DVR, and IP
admin | Password: 888888 (High-privilege administrator account)
Do you see a button or QR code on your login screen?
A: Rarely. Some older rebrands or specific international models used 123456 , but this is not standard for official Dahua units.