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.
History

Mon, 20 Oct 2025 13:30:00 +0000

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

Fri, 17 Oct 2025 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Thu, 16 Oct 2025 19:00:00 +0000

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 '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.
Title D-Link Nuclias Connect <= v1.3.1.4 Login 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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2025-10-16T18:52:08.435Z

Updated: 2025-10-17T14:29:49.920Z

Reserved: 2025-04-15T19:15:22.578Z

Link: CVE-2025-34254

cve-icon Vulnrichment

Updated: 2025-10-17T14:29:47.517Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-10-16T19:15:32.777

Modified: 2025-10-21T19:31:50.020

Link: CVE-2025-34254

cve-icon Redhat

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