CVE-2025-71317: Use of Hard-coded Credentials in Riello UPS NetMan 204
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.
AI Analysis
Technical Summary
CVE-2025-71317 describes a critical vulnerability in the Riello UPS NetMan 204 device, where a hard-coded backdoor account ('eurek'/'eurek') exists. This account can be used by remote unauthenticated attackers to authenticate through the cgi-bin/login.cgi endpoint, which improperly validates parameters allowing simplified login requests. Successful exploitation grants administrative privileges, enabling attackers to modify device settings, activate telnet/SSH services, and reset user credentials. The vulnerability is publicly disclosed with a CVSS 4.0 score of 9.3, indicating high impact and ease of exploitation. No patch or official remediation has been documented.
Potential Impact
The vulnerability allows remote unauthenticated attackers to gain full administrative access to the NetMan 204 device. This access enables attackers to change device configurations, enable remote management services (telnet/SSH), and reset user credentials, potentially compromising the device's security and control. The critical CVSS score reflects the high impact and low attack complexity. There are no known exploits in the wild currently.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict network access to the NetMan 204 management interface to trusted users only and monitor for unauthorized access attempts. Consider isolating the device from untrusted networks to reduce exposure. Do not rely on the device's default credentials and verify if any firmware updates or vendor advisories are released addressing this issue.
CVE-2025-71317: Use of Hard-coded Credentials in Riello UPS NetMan 204
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.
CVSS v4.0
Score 9.3critical
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-71317 describes a critical vulnerability in the Riello UPS NetMan 204 device, where a hard-coded backdoor account ('eurek'/'eurek') exists. This account can be used by remote unauthenticated attackers to authenticate through the cgi-bin/login.cgi endpoint, which improperly validates parameters allowing simplified login requests. Successful exploitation grants administrative privileges, enabling attackers to modify device settings, activate telnet/SSH services, and reset user credentials. The vulnerability is publicly disclosed with a CVSS 4.0 score of 9.3, indicating high impact and ease of exploitation. No patch or official remediation has been documented.
Potential Impact
The vulnerability allows remote unauthenticated attackers to gain full administrative access to the NetMan 204 device. This access enables attackers to change device configurations, enable remote management services (telnet/SSH), and reset user credentials, potentially compromising the device's security and control. The critical CVSS score reflects the high impact and low attack complexity. There are no known exploits in the wild currently.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict network access to the NetMan 204 management interface to trusted users only and monitor for unauthorized access attempts. Consider isolating the device from untrusted networks to reduce exposure. Do not rely on the device's default credentials and verify if any firmware updates or vendor advisories are released addressing this issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-06-05T16:56:46.183Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a23130be29bf47b50a3ecce
Added to database: 6/5/2026, 6:18:51 PM
Last enriched: 6/5/2026, 6:34:28 PM
Last updated: 6/6/2026, 5:00:45 AM
Views: 7
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