CVE-2025-71317
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (35.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 35.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/52183 (exploit)
- www.riello-ups.com/downloads/25-netman-204 (product)
- www.vulncheck.com/advisories/netman-204-hard-coded-backdoor-credentials (third-party-advisory)
Frequently asked questions
- What is CVE-2025-71317?
- CVE-2025-71317 is a critical-severity vulnerability, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2026-06-05.
- How severe is CVE-2025-71317?
- Critical severity. CVSS v3 base score is 9.8 out of 10.