CVE-2020-37202 NetworkSleuth 3.0.0.0 - 'Key' Denial of Service
Attackers can crash NetworkSleuth by entering an oversized registration key, causing a denial of service.
- 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-2020-37202?
CVE-2020-37202 is a medium-severity denial of service vulnerability in Nsasoft Nsauditor NetworkSleuth, published on 11 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
NetworkSleuth 3.0.0.0 contains a denial of service vulnerability that allows attackers to crash the application by supplying an oversized registration key. Attackers can generate a 1000-character buffer payload and paste it into the registration key field to trigger an application crash.
Weakness: CWE-120
Which versions are affected by CVE-2020-37202?
How do I fix CVE-2020-37202?
No fix has been published for CVE-2020-37202 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-2020-37202 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-37202 exists.
Sources
Also known as GHSA-42ww-368q-gjw4.