CVE-2020-37200 NetShareWatcher 1.5.8.0 - 'Key' Denial of Service
Attackers can crash the NetShareWatcher application by entering oversized data into the registration key field, causing a buffer overflow.
- 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-2020-37200?
CVE-2020-37200 is a medium-severity memory corruption vulnerability in Nsasoft Nsauditor NetShareWatcher, 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
NetShareWatcher 1.5.8.0 contains a buffer overflow vulnerability in the registration key input that allows attackers to crash the application by supplying oversized input. Attackers can generate a 1000-character payload and paste it into the registration key field to trigger an application crash.
Weakness: CWE-121
Which versions are affected by CVE-2020-37200?
It affects 1 product.
Products include Nsasoft Netsharewatcher.
How do I fix CVE-2020-37200?
No fix has been published for CVE-2020-37200 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-37200 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-37200 exists.
Other vulnerabilities in Nsasoft Nsauditor NetShareWatcher
Sources
Also known as GHSA-mqpv-gcv6-r5w9.