CVE-2020-37131 Product Key Explorer 4.2.2.0 - 'Key' Denial of Service
Local attackers can crash Product Key Explorer by pasting a large crafted string into the registration key field.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-37131?
CVE-2020-37131 is a medium-severity denial of service vulnerability in Nsauditor Product Key Explorer, published on 5 Feb 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Nsauditor Product Key Explorer 4.2.2.0 contains a denial of service vulnerability that allows local attackers to crash the application by inputting a specially crafted registration key. Attackers can generate a payload of 1000 bytes of repeated characters and paste it into the 'Key' input field to trigger the application crash.
Weakness: CWE-120
Which versions are affected by CVE-2020-37131?
It affects 1 product.
Products include Nsasoft Product Key Explorer.
How do I fix CVE-2020-37131?
No fix has been published for CVE-2020-37131 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-2020-37131 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-37131 exists.
Other vulnerabilities in Nsauditor Product Key Explorer
Sources
Also known as GHSA-c7w3-w5vf-px2h.