CVE-2020-37131

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.

CVSS v3 6.2 MEDIUM

6.2^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.5 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
http://www.nsauditor.com	Product
https://www.exploit-db.com/exploits/48284	Exploit VDB Entry
https://www.vulncheck.com/advisories/product-key-explorer-key-denial-of-service	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:nsasoft:product_key_explorer:4.2.2.0:*:*:*:*:*:*:*

History

26 Mar 2026, 18:03

Type	Values Removed	Values Added
Summary		(es) Nsauditor Product Key Explorer 4.2.2.0 contiene una vulnerabilidad de denegación de servicio que permite a atacantes locales colgar la aplicación al introducir una clave de registro especialmente diseñada. Los atacantes pueden generar una carga útil de 1000 bytes de caracteres repetidos y pegarla en el campo de entrada 'Key' para desencadenar el bloqueo de la aplicación.
References	~~() http://www.nsauditor.com -~~	() http://www.nsauditor.com - Product
References	~~() https://www.exploit-db.com/exploits/48284 -~~	() https://www.exploit-db.com/exploits/48284 - Exploit, VDB Entry
References	~~() https://www.vulncheck.com/advisories/product-key-explorer-key-denial-of-service -~~	() https://www.vulncheck.com/advisories/product-key-explorer-key-denial-of-service - Third Party Advisory
CPE		cpe:2.3:a:nsasoft:product_key_explorer:4.2.2.0:::::::*
First Time		Nsasoft product Key Explorer Nsasoft

05 Feb 2026, 17:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-02-05 17:16

Updated : 2026-03-26 18:03

NVD link : CVE-2020-37131

Mitre link : CVE-2020-37131

CVE.ORG link : CVE-2020-37131

JSON object : View

Products Affected

nsasoft

product_key_explorer

CWE

CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

{"id": "CVE-2020-37131", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.2, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.5}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}], "cvssMetricV40": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 6.7, "Automatable": "NOT_DEFINED", "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "ACTIVE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "published": "2026-02-05T17:16:08.207", "references": [{"url": "http://www.nsauditor.com", "tags": ["Product"], "source": "disclosure@vulncheck.com"}, {"url": "https://www.exploit-db.com/exploits/48284", "tags": ["Exploit", "VDB Entry"], "source": "disclosure@vulncheck.com"}, {"url": "https://www.vulncheck.com/advisories/product-key-explorer-key-denial-of-service", "tags": ["Third Party Advisory"], "source": "disclosure@vulncheck.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "disclosure@vulncheck.com", "description": [{"lang": "en", "value": "CWE-120"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Nsauditor Product Key Explorer 4.2.2.0 contiene una vulnerabilidad de denegaci\u00f3n de servicio que permite a atacantes locales colgar la aplicaci\u00f3n al introducir una clave de registro especialmente dise\u00f1ada. Los atacantes pueden generar una carga \u00fatil de 1000 bytes de caracteres repetidos y pegarla en el campo de entrada 'Key' para desencadenar el bloqueo de la aplicaci\u00f3n."}], "lastModified": "2026-03-26T18:03:16.923", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:nsasoft:product_key_explorer:4.2.2.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F3AC73D8-71B6-4F59-B5AC-E3E0C959E76C"}], "operator": "OR"}]}], "sourceIdentifier": "disclosure@vulncheck.com"}