CVE-2025-71317

CRITICAL

NetMan 204 Hard-coded Backdoor Credentials

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2025-71317. PoCs published by Parsa Rezaie Khiabanloo.

AI-analyzed exploit summary This writeup details an authentication bypass vulnerability in Netman 204 UPS panels, allowing unauthenticated access to sensitive endpoints and remote commands. It includes specific URLs and methods to exploit the flaw, such as using default credentials and path traversal techniques.

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.

Exploits (1)

exploitdb WRITEUP
by Parsa Rezaie Khiabanloo · texthardwaremultiple
https://www.exploit-db.com/exploits/52183

This writeup details an authentication bypass vulnerability in Netman 204 UPS panels, allowing unauthenticated access to sensitive endpoints and remote commands. It includes specific URLs and methods to exploit the flaw, such as using default credentials and path traversal techniques.

Classification
Writeup 90%
Attack Type
Auth Bypass
Complexity
Trivial
Reliability
Reliable
Target: Netman 204 UPS panel
No auth needed
Prerequisites: Network access to the target UPS panel · Shodan or similar search tool to locate vulnerable devices
devstral-2 · analyzed Jun 06, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit exploit
Exploit-DB
https://www.exploit-db.com/exploits/52183
Third Party Advisory third-party-advisory
VulnCheck Advisory: NetMan 204 Hard-coded Backdoor Credentials
https://www.vulncheck.com/advisories/netman-204-hard-coded-backdoor-credentials

Scores

CVSS v3 9.8
EPSS 0.0008
EPSS Percentile 23.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact total

Details

CWE
CWE-798
Status published
Products (1)
Riello UPS/NetMan 204
Published Jun 05, 2026
Tracked Since Jun 06, 2026