---
id: CVE-2019-25572
title: >-
  NordVPN 6.19.6 contains a denial of service vulnerability that allows local
  attackers to crash the application by submitting an excessively long string in
  the email input field
summary: >-
  NordVPN 6.19.6 contains a denial of service vulnerability that allows local
  attackers to crash the application by submitting an excessively long string in
  the email input field. Attackers can paste a buffer of 100,000 characters into
  the…
severity: medium
cvss: 6.2
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-1260
vendor: nordvpn
product: nordvpn
affected:
  - nordvpn <= 6.19.6
published: '2026-03-21'
updated: '2026-10-07'
sourceUpdated: '2026-10-07T08:10:00.200'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2019-25572'
references:
  - url: >-
      https://downloads.nordcdn.com/apps/windows/10/NordVPN/latest/NordVPNSetup.exe
    label: disclosure@vulncheck.com
  - url: 'https://nordvpn.com/'
    label: disclosure@vulncheck.com
  - url: 'https://www.exploit-db.com/exploits/46343'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/nordvpn-denial-of-service-via-email-field-buffer-overflow
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.00157
epssPercentile: 0.04214
ingestedAt: '2026-10-07T08:20:03.904Z'
---

## Overview

NordVPN 6.19.6 contains a denial of service vulnerability that allows local attackers to crash the application by submitting an excessively long string in the email input field. Attackers can paste a buffer of 100,000 characters into the email field during login to trigger an application crash.

## Affected

- `nordvpn <= 6.19.6`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.