CVE-2018-25368

Description

Nord VPN 6.14.31 contains a denial of service vulnerability that allows unauthenticated attackers to crash the application by submitting an excessively long string in the password field. Attackers can paste a buffer of repeated characters into the password input field to trigger an application crash when attempting to authenticate.

Overview

State

—

Assigner (CNA)

—

CVSS severity

high

CVSS score

7.5 / 10

CVSS vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Effective score

7.5 / 10 HIGH source: CNA overview

CWE(s)

—

Reserved

—

Published

—

Last updated

—

Source

https://www.tenable.com/cve/CVE-2018-25368

Linked Threat

CVE-2018-25368 — CVE-2018-25368

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published

2026-05-25 15:16:19 UTC

NVD last modified

2026-07-23 19:10:00 UTC

NVD CVSS v3.1

7.5 / 10 HIGH source: disclosure@vulncheck.com

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploitability subscore

3.9 / 10

Impact subscore

3.6 / 10

EPSS score

0.0039 (probability of exploitation in next 30 days)

EPSS percentile

31.17% vs all CVEs — higher = more likely to be exploited, as of 2026-07-27

NVD-assigned CWE(s): CWE-789 (differs from the CNA list above)

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID

EUVD-2018-21891

Assigner

VulnCheck

Published

May 25, 2026, 2:15:13 PM

Updated

May 26, 2026, 3:22:10 PM

EUVD base score (CVSS 4.0)

8.7 / 10
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

EUVD-reported EPSS

0.3900

Vendors

nordvpn

Products

NordVPN (0 ≤6.14.31)

Aliases

GHSA-x9hx-hwff-3m7w

ENISA description: Nord VPN 6.14.31 contains a denial of service vulnerability that allows unauthenticated attackers to crash the application by submitting an excessively long string in the password field. Attackers can paste a buffer of repeated characters into the password input field to trigger an application crash when attempting to authenticate.

Vendor references (0)

References embedded in the original CVE record by the assigning CNA.

None in the CVE record.

Web references (6)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

• https://nordvpn.com/download/ tenable:nordvpn.com
• https://nvd.nist.gov/vuln/detail/CVE-2018-25368 tenable:nvd.nist.gov
• https://www.cve.org/CVERecord?id=CVE-2018-25368 tenable:www.cve.org
• https://www.exploit-db.com/exploits/45304 tenable:www.exploit-db.com
• https://www.first.org/epss/ tenable:www.first.org
• https://www.vulncheck.com/advisories/nord-vpn-denial-of-service-via-password-field tenable:www.vulncheck.com

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

• NVD - Home
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  web:www.esri.com

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• Oracle Critical Patch Update Advisory - January 2025
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  web:www.oracle.com

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• Qualys Automated Patch Management Security software
  web:www.qualys.com

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