What’s Vulnerable › Vulnerabilities

CVE-2025-34255: D-Link Nuclias Connect <= v1.3.1.4 Forgot Password Account Enumeration

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-10-16 · updated 2026-10-09
• Weakness: CWE-204

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 products

• D-Link Nuclias Connect: through 1.3.1.4

References

• https://supportannouncement.us.dlink.com/security/publication.aspx?name=SAP10472
• https://www.dlink.com/en/for-business/nuclias/nuclias-connect
• https://www.vulncheck.com/advisories/dlink-nuclias-connect-forgot-password-account-enumeration

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