CVE-2025-34255

D-Link Nuclias Connect <= v1.3.1.4 Forgot Password Account Enumeration

Published Oct 16, 2025 CVSS 4.0 · 6.9 Medium EPSS 1.0% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Dlink
Dlink nuclias Connect
CPEs cpe:2.3:a:dlink:nuclias_connect:*:*:*:*:*:*:*:*
Vendors & Products Dlink
Dlink nuclias Connect
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}

Type Values Removed Values Added
First Time appeared D-link
D-link nuclias Connect
Vendors & Products D-link
D-link nuclias Connect
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title D-Link Nuclias Connect <= v1.3.1.4 Forgot Password Account Enumeration
Weaknesses CWE-204
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
May 25, 2026, 11:41 PM
Reserved
Apr 15, 2025, 7:15 PM
Status
Analyzed
Published
Oct 16, 2025, 7:15 PM
Modified
Oct 9, 2026, 10:10 AM