Vulnerability Details CVE-2025-34255
D-Link Nuclias Connect firmware versions <= 1.3.1.4 contain an observable response discrepancy vulnerability. The application's 'Forgot Password' endpoint returns distinct JSON responses depending on whether the supplied email address is associated with an existing account. Because the responses differ in the `data.exist` boolean value, an unauthenticated remote attacker can enumerate valid email addresses/accounts on the server. NOTE: D-Link states that a fix is under development.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 14.9%
CVSS Severity
CVSS v3 Score 5.3
References
Products affected by CVE-2025-34255
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cpe:2.3:a:dlink:nuclias_connect:1.3.1.2
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cpe:2.3:a:dlink:nuclias_connect:1.3.1.4