---
id: CVE-2020-37202
title: NetworkSleuth 3.0.0.0 - 'Key' Denial of Service
summary: >-
  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
  regi…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cvssSource: cna
cwe:
  - CWE-120
vendor: Nsasoft
product: Nsauditor NetworkSleuth
affected:
  - nsauditor_networksleuth 3.0.0.0
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-02-12T14:34:28.396180Z'
exploitAvailable: true
published: '2026-02-11'
updated: '2026-10-27'
sourceUpdated: '2026-10-27T01:30:24.624Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2020-37202'
references:
  - url: 'https://www.exploit-db.com/exploits/47853'
    label: ExploitDB-47853
  - url: 'http://www.nsauditor.com/'
    label: Vendor Homepage
  - url: 'https://www.vulncheck.com/advisories/networksleuth-key-denial-of-service'
    label: 'VulnCheck Advisory: NetworkSleuth 3.0.0.0 - ''Key'' Denial of Service'
tags:
  - cve.org
  - exploit-available
epss: 0.00376
epssPercentile: 0.31349
ingestedAt: '2026-10-27T16:11:59.193Z'
---

## Overview

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.

## Affected

- `nsauditor_networksleuth 3.0.0.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.