CVE 9.3 CRITICAL

NetMan 204 Hard-coded Backdoor Credentials_CVE-2025-71317

June 5, 2026 invoker category_cve

9.3 / 10

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

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.

AI Analysis

Hard-coded backdoor account in NetMan 204 allowing remote, unauthenticated administrative access

Basic Information

ID CVE-2025-71317

Source VulnCheck

Published Jun 5, 2026 at 17:49

Affected Product

Vendor Riello UPS

Product NetMan 204

Affected Versions Riello UPS NetMan 204 0

CWE Classification

CWE-798

AI Assessment

AI Score 9.3 / 10

AI Severity Critical

Vendor Riello UPS

Product NetMan 204

References

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    "published": "2026-06-05T17:49:50.474Z",
    "modified": "2026-06-05T17:49:50.474Z",
    "type": "cve",
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    "references": "https://www.exploit-db.com/exploits/52183\nhttps://www.riello-ups.com/downloads/25-netman-204\nhttps://www.vulncheck.com/advisories/netman-204-hard-coded-backdoor-credentials",
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