Zyxel Prestige 782R Authentication Bypass

The Zyxel Prestige 782R router (Shodan search) suffers from the RomPager /rom-0 bypass mentioned on earlier blogs.

If you request the /rom-0 file it does not require authentication. This can be reversed using available tools like the one at The first string returned is the admin password.

Ultimately this is due to the router using the RomPager server. Can identify from the header:

Server: ZyXEL-RomPager/3.02


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