CVE-2018-25368 Nord VPN 6.14.31 Denial of Service via Password Field
Unauthenticated attackers can crash the NordVPN application by submitting an excessively long string in the password field.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-25368?
CVE-2018-25368 is a high-severity denial of service vulnerability in NordVPN, published on 25 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-789
Which versions are affected by CVE-2018-25368?
How do I fix CVE-2018-25368?
No fix has been published for CVE-2018-25368 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2018-25368 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2018-25368 exists.
Sources
Also known as GHSA-x9hx-hwff-3m7w.