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CVE-2025-71317

9.8 · CRITICAL

NetMan 204 contains a hard-coded backdoor account with the username and password 'eurek' that grants administrative access.

Published Jun 5, 2026CWE-798EPSS 0.43%

Overview

CVE-2025-71317 is a critical-severity vulnerability. It was published on June 5, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.exploit-db.com/exploits/52183Refwww.riello-ups.com/downloads/25-netman-204Refwww.vulncheck.com/advisories/netman-204-hard-coded-backdoor-credentials

How CyberStrike helps

Frequently asked questions

What is CVE-2025-71317?

CVE-2025-71317 is a critical-severity vulnerability. It was published on June 5, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2025-71317?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2025-71317?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-71317?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-71317 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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