CVE-2018-25368

HIGH

Nord VPN 6.14.31 Denial of Service via Password Field

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2018-25368. PoCs published by L0RD.

AI-analyzed exploit summary This exploit generates a large buffer of 'A' characters (100,000 bytes) and writes it to a file. When pasted into the NordVPN password field, it triggers a denial-of-service condition, crashing the application. The PoC is functional but lacks sophistication.

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.

Exploits (1)

exploitdb WORKING POC
by L0RD · pythondoswindows_x86-64
https://www.exploit-db.com/exploits/45304

This exploit generates a large buffer of 'A' characters (100,000 bytes) and writes it to a file. When pasted into the NordVPN password field, it triggers a denial-of-service condition, crashing the application. The PoC is functional but lacks sophistication.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: NordVPN <= 6.14.31
No auth needed
Prerequisites: NordVPN installed on Windows 10 · Access to the login interface
devstral-2 · analyzed May 25, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit exploit
ExploitDB-45304
https://www.exploit-db.com/exploits/45304
Product product
Product Reference
https://nordvpn.com/download/
Third Party Advisory third-party-advisory
VulnCheck Advisory: Nord VPN 6.14.31 Denial of Service via Password Field
https://www.vulncheck.com/advisories/nord-vpn-denial-of-service-via-password-field

Scores

CVSS v3 7.5
EPSS 0.0039
EPSS Percentile 30.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-789
Status published
Products (1)
Nordvpn/NordVPN < 6.14.31
Published May 25, 2026
Tracked Since May 25, 2026