Vulnerability Description
D-Link Nuclias Connect firmware versions <= 1.3.1.4 contain an observable response discrepancy vulnerability. The application's 'Login' endpoint returns distinct JSON responses depending on whether the supplied username is associated with an existing account. Because the responses differ in the `error.message`string value, an unauthenticated remote attacker can enumerate valid usernames/accounts on the server. NOTE: D-Link states that a fix is under development.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Dlink | Nuclias Connect | <= 1.3.1.4 |
Related Weaknesses (CWE)
References
- https://supportannouncement.us.dlink.com/security/publication.aspx?name=SAP10472Vendor Advisory
- https://www.dlink.com/en/for-business/nuclias/nuclias-connectProduct
- https://www.vulncheck.com/advisories/dlink-nuclias-connect-login-account-enumeraThird Party Advisory
FAQ
What is CVE-2025-34254?
CVE-2025-34254 is a vulnerability with a CVSS score of 5.3 (MEDIUM). D-Link Nuclias Connect firmware versions <= 1.3.1.4 contain an observable response discrepancy vulnerability. The application's 'Login' endpoint returns distinct JSON responses depending on whether th...
How severe is CVE-2025-34254?
CVE-2025-34254 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-34254?
Check the references section above for vendor advisories and patch information. Affected products include: Dlink Nuclias Connect.