PT-2026-47013 · Riello Ups · Netman 204

Published 2026-06-05 · Updated 2026-06-05 · CVE-2025-71317

Mitre

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NetMan 204 contains a hard-coded backdoor account with the username and password 'eurek' that grants administrative access. A remote, unauthenticated attacker can authenticate through the cgi-bin/login.cgi endpoint (for example /cgi-bin/login.cgi?username=eurek&password=eurek, which due to lax parameter validation can be shortened to /cgi-bin/login.cgi?username=eurek%20eurek) to obtain administrator privileges, allowing them to alter device configuration, enable the telnet/SSH services, and reset local user credentials.

Exploit

Fix

Using Hardcoded Credentials

Weakness Enumeration

CWE-798

Related Identifiers

CVE-2025-71317

Affected Products

Netman 204

References · 4

• 🔥 https://exploit-db.com/exploits/52183 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2025-71317 · Security Note
• https://riello-ups.com/downloads/25-netman-204 · Note
• https://vulncheck.com/advisories/netman-204-hard-coded-backdoor-credentials · Note