Quick answers
- Is CVE-2020-37200 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2020-37200 being exploited in the wild.
- How severe is CVE-2020-37200?
- 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-2020-37200?
- 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-2020-37200 attacked?
- It is attacked with local access, in a network appliance.
- Am I affected by CVE-2020-37200?
- 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 stack-based buffer overflow (CWE-121) exists in NetShareWatcher version 1.5.8.0. The vulnerability is located in the registration key input component, which fails to properly validate the length of the input string. An attacker can trigger the overflow by providing a payload of approximately 1,000 characters into the 'Key' field. While the primary impact is a denial of service (application crash), stack-based overflows can sometimes be leveraged for arbitrary code execution depending on system protections. The exploit requires local interaction to paste the malicious string into the registration interface.
Affected products
- Nsasoft (Nsauditor) NetShareWatcher 1.5.8.0
Timeline
- 2020-01-06: disclosed: Initial PoC exploit published on Exploit-DB
- 2026-02-11: advisory: NVD publication and CVE assignment