CVE-2025-34254
D-Link Nuclias Connect <= v1.3.1.4 Login Account Enumeration
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.
INFO
Published Date :
Oct. 16, 2025, 7:15 p.m.
Last Modified :
Oct. 30, 2025, 4:07 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | MEDIUM | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Update firmware to the latest version.
- Apply vendor patches when available.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-34254.
| URL | Resource |
|---|---|
| https://supportannouncement.us.dlink.com/security/publication.aspx?name=SAP10472 | Vendor Advisory |
| https://www.dlink.com/en/for-business/nuclias/nuclias-connect | Product |
| https://www.vulncheck.com/advisories/dlink-nuclias-connect-login-account-enumeration | Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-34254 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-34254
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-34254 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-34254 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Oct. 30, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Added CPE Configuration OR *cpe:2.3:a:dlink:nuclias_connect:*:*:*:*:*:*:*:* versions up to (including) 1.3.1.4 Added Reference Type VulnCheck: https://supportannouncement.us.dlink.com/security/publication.aspx?name=SAP10472 Types: Vendor Advisory Added Reference Type VulnCheck: https://www.dlink.com/en/for-business/nuclias/nuclias-connect Types: Product Added Reference Type VulnCheck: https://www.vulncheck.com/advisories/dlink-nuclias-connect-login-account-enumeration Types: Third Party Advisory -
New CVE Received by [email protected]
Oct. 16, 2025
Action Type Old Value New Value 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-204 Added Reference https://supportannouncement.us.dlink.com/security/publication.aspx?name=SAP10472 Added Reference https://www.dlink.com/en/for-business/nuclias/nuclias-connect Added Reference https://www.vulncheck.com/advisories/dlink-nuclias-connect-login-account-enumeration