Read the docs
TI-2025-43438 Aliases CVE-2025-71317GHSA-w87w-x2c9-f3pw

NetMan 204 Hard-coded Backdoor Credentials

Priority HIGH 81CWE-798Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-798.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00432 37th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Riello UPSNetMan 204all versions—No fix listedCNA
  • NetMan 204 VendorRiello UPS Affected all versions Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-71317
  2. 2026-10-03 Alias added: GHSA-w87w-x2c9-f3pw

References

Exploit 1

Other 1

  • TI-2024-08244 Unauthenticated Password Reset CVSS 4.0CRITICAL 10.0
  • TI-2025-43439 NetMan 204 Missing Authentication for Administrative Functions CVSS 4.0CRITICAL 9.3
  • TI-2024-08243 SQL injection in Riello UPS Netman 204 CVSS 4.0MEDIUM 6.9
  • TI-2025-42374 Path traversal in Riello UPS NetMan CVSS 3.1CRITICAL 9.1
  • TI-2025-42372 SQL injection in Riello UPS NetMan CVSS 3.1MEDIUM 6.5
  • TI-2025-42373 Riello UPS NetMan 208 Application before 1.12 allows cgi-bin/loginbanner_w.cgi XSS via a crafted banner. CVSS 3.1MEDIUM 5.5
See all 11 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences