Is CVE-2020-37201 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2020-37201 being exploited in the wild.

How severe is CVE-2020-37201?

High severity, with a CVSS score of 7.5, published 11 February 2026.

Which products and versions are affected?

Nsasoft NetShareWatcher 1.5.8.0.

Is there a fix for CVE-2020-37201?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2020-37201 attacked?

It is attacked with local access, in a network appliance.

Am I affected by CVE-2020-37201?

Check whether you run Nsasoft NetShareWatcher at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2020-37201: Nsasoft NetShareWatcher buffer overflow in registration name input

CVE-2020-37201 · Severity: high · CVSS 7.5 · Published 2026-02-11

NetShareWatcher, a tool used for monitoring network shares, contains a vulnerability in its registration system. An attacker can cause the application to crash by entering an excessively long name into the registration field. This results in a denial-of-service, preventing legitimate users from using the software.

Technologies: Nsasoft NetShareWatcher. Vendors: Nsasoft.

Quick answers

Is CVE-2020-37201 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2020-37201 being exploited in the wild.
How severe is CVE-2020-37201?: High severity, with a CVSS score of 7.5, published 11 February 2026.
Which products and versions are affected?: Nsasoft NetShareWatcher 1.5.8.0.
Is there a fix for CVE-2020-37201?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2020-37201 attacked?: It is attacked with local access, in a network appliance.
Am I affected by CVE-2020-37201?: Check whether you run Nsasoft NetShareWatcher at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A classic buffer overflow (CWE-120) exists in NetShareWatcher version 1.5.8.0 within the 'Enter Registration Code' dialog. The application fails to properly validate the length of the input provided in the 'Name' field. An attacker can trigger this vulnerability by pasting a payload of approximately 1,000 characters into the field, leading to memory corruption and an application crash (Denial of Service). While some sources suggest a local attack vector requiring user interaction, others indicate it can be triggered via network-based delivery of the payload. A public Proof of Concept (PoC) exploit is available.

Affected products

Nsasoft (Nsauditor) NetShareWatcher 1.5.8.0

Timeline

2020-01-06: disclosed: Initial exploit code published to Exploit-DB
2026-02-11: advisory: NVD/VulnCheck advisory published

References

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