CVE-2019-25572
NordVPN 6.19.6 Denial of Service via Email Field Buffer Overflow
Description
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.
INFO
Published Date :
March 21, 2026, 1:16 p.m.
Last Modified :
April 15, 2026, 5:12 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | MEDIUM | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Update NordVPN to the latest version.
- Apply vendor patches when available.
- Validate input lengths for text fields.
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-2019-25572.
| URL | Resource |
|---|---|
| https://downloads.nordcdn.com/apps/windows/10/NordVPN/latest/NordVPNSetup.exe | Broken Link |
| https://nordvpn.com/ | Product |
| https://www.exploit-db.com/exploits/46343 | Exploit VDB Entry |
| https://www.vulncheck.com/advisories/nordvpn-denial-of-service-via-email-field-buffer-overflow | 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-2019-25572 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-2019-25572
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-2019-25572 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2019-25572 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]
Apr. 15, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CPE Configuration OR *cpe:2.3:a:nordvpn:nordvpn:*:*:*:*:*:windows:*:* versions up to (including) 6.19.6 Added Reference Type VulnCheck: https://downloads.nordcdn.com/apps/windows/10/NordVPN/latest/NordVPNSetup.exe Types: Broken Link Added Reference Type VulnCheck: https://nordvpn.com/ Types: Product Added Reference Type VulnCheck: https://www.exploit-db.com/exploits/46343 Types: Exploit, VDB Entry Added Reference Type VulnCheck: https://www.vulncheck.com/advisories/nordvpn-denial-of-service-via-email-field-buffer-overflow Types: Third Party Advisory -
New CVE Received by [email protected]
Mar. 21, 2026
Action Type Old Value New Value Added Description 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. Added CVSS V4.0 AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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 CVSS V3.1 AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-1260 Added Reference https://downloads.nordcdn.com/apps/windows/10/NordVPN/latest/NordVPNSetup.exe Added Reference https://nordvpn.com/ Added Reference https://www.exploit-db.com/exploits/46343 Added Reference https://www.vulncheck.com/advisories/nordvpn-denial-of-service-via-email-field-buffer-overflow