CVE-2025-34255

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

MEDIUM
5.3
CVSS Score
Published: October 16, 2025 at 06:52 PM UTC
Updated: October 9, 2026 at 10:10 AM UTC
1 product affected across 1 vendorNuclias Connect

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Severity
MEDIUM5.3
Exploit prediction
EPSS 1%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 1.3.1.40 ≤ v ≤ 1.3.1.4*0
Affected range stops below 1.3.1.4, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-204

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