Which versions of Product Key Explorer are affected by CVE-2020-37131?

Organizations using Nsauditor Product Key Explorer 4.2.2.0 should be aware of notable risk from CVE-2020-37131, a buffer overflow vulnerability rated CVSS 6.7.

Is there a public PoC exploit available for CVE-2020-37131?

Yes, a public proof-of-concept exploit is available for CVE-2020-37131. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2020-37131?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Product Key Explorer CVE-2020-37131

Q: What is the CVSS score of CVE-2020-37131?

CVE-2020-37131 has a CVSS 4.0 base score of 6.7 (Medium). CVSS vector: 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. EPSS exploitation probability: 0.0%.

MEDIUM

Classic Buffer Overflow (CWE-120)

2026-02-05 disclosure@vulncheck.com

Denial Of Service Buffer Overflow Product Key Explorer

6.7

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

6.7 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Scope

Lifecycle Timeline

PoC Detected

Mar 26, 2026 - 18:03 vuln.today

Public exploit code

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

CVE Published

Feb 05, 2026 - 17:16 nvd

MEDIUM 6.7

DescriptionCVE.org

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.

AnalysisAI

Technical ContextAI

Classified as CWE-120 (Classic Buffer Overflow). 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.

RemediationAI

Monitor vendor advisories for a patch. Enable ASLR, DEP/NX, and stack canaries where possible.

CVE-2020-37131 vulnerability details – vuln.today

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