NetMan 204 Hard-coded Backdoor Credentials
CVE-2025-71317

9.3CRITICAL

Key Information:

Vendor

Riello Ups

Status
Netman 204
Vendor
CVE Published:
5 June 2026

Badges

👾 Exploit Exists

What is CVE-2025-71317?

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.

Affected Version(s)

NetMan 204 0

References

https://www.exploit-db.com/exploits/52183
exploit
https://www.riello-ups.com/downloads/25-netman-204
product
https://www.vulncheck.com/advisories/netman-204-hard-code...
third-party-advisory

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

parsa rezaie khiabanloo
.