CVE-2025-71317
NetMan 204 Hard-coded Backdoor Credentials
- State
- Published
- Severity
- 9.3 Critical
- Published
- Jun 5, 2026
- Updated
- Jun 5, 2026
- Reserved
- Jun 5, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.3 Critical | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-798 Use of Hard-coded Credentials
Affected Products
| Product | Versions |
|---|---|
NetMan 204Riello UPS |
|
References
- Exploit-DBexploit
- Vendorproduct
- VulnCheck Advisory: NetMan 204 Hard-coded Backdoor Credentialsthird-party-advisory
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