---
id: CVE-2020-37131
title: >-
  Nsauditor Product Key Explorer 4.2.2.0 contains a denial of service
  vulnerability that allows local attackers to crash the application by
  inputting a specially crafted registration key
summary: >-
  Nsauditor Product Key Explorer 4.2.2.0 contains a denial of service
  vulnerability that allows local attackers to crash the application by
  inputting a specially crafted registration key. Attackers can generate a
  payload of 1000 bytes of r…
severity: medium
cvss: 6.2
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-120
vendor: nsasoft
product: product_key_explorer
affected:
  - product_key_explorer = 4.2.2.0
published: '2026-02-05'
updated: '2026-06-29'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2020-37131'
references:
  - url: 'http://www.nsauditor.com'
    label: disclosure@vulncheck.com
  - url: 'https://www.exploit-db.com/exploits/48284'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/product-key-explorer-key-denial-of-service
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.00237
epssPercentile: 0.14944
ingestedAt: '2026-06-29T21:48:47.238Z'
---

## Overview

Nsauditor Product Key Explorer 4.2.2.0 contains a denial of service vulnerability that allows local attackers to crash the application by inputting a specially crafted registration key. Attackers can generate a payload of 1000 bytes of repeated characters and paste it into the 'Key' input field to trigger the application crash.

## Affected

- `product_key_explorer = 4.2.2.0`

## Remediation

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