CVE-2025-71317 NetMan 204 Hard-coded Backdoor Credentials
Remote attackers can use hard-coded backdoor credentials to gain administrative access and modify device configuration on NetMan 204 units.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-71317?
CVE-2025-71317 is a critical vulnerability in Riello UPS NetMan 204, published on 5 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-798
Which versions are affected by CVE-2025-71317?
How do I fix CVE-2025-71317?
No fix has been published for CVE-2025-71317 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-71317 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-71317 exists.
Sources
Also known as GHSA-w87w-x2c9-f3pw.