Skip to content
OpenAdvisories
Medium · 6.9 CVE-2025-34254 EUVD-2025-34831GHSA-mr7p-fqx6-72v7

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

Published Oct 16, 2025 · Updated May 25, 2026 · Assigned by VulnCheck

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.

Affected products

VendorProductAffectedFixed
D-Link Nuclias Connect ≤ 1.3.1.4 —

References