What is the CVSS score of CVE-2020-37202?

CVE-2020-37202 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.0%.

Is there a public PoC exploit available for CVE-2020-37202?

Yes, a public proof-of-concept exploit is available for CVE-2020-37202. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2020-37202?

Within 24 hours: inventory all NetworkSleuth 3.0.0.0 deployments and restrict access to the registration key field to authorized personnel only. Within 7 days: implement input validation controls and monitor for suspicious registration key submissions. Within 30 days: upgrade to the latest available NetworkSleuth version or contact the vendor for patch availability and ETA.

CVE-2020-37202

HIGH

Classic Buffer Overflow (CWE-120)

2026-02-11 disclosure@vulncheck.com

Denial Of Service

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:02 vuln.today

PoC Detected

Feb 12, 2026 - 15:10 vuln.today

Public exploit code

CVE Published

Feb 11, 2026 - 21:16 nvd

HIGH 7.5

DescriptionCVE.org

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.

AnalysisAI

Technical ContextAI

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

NetworkSleuth 3.0.0.0 contains a denial of service vulnerability that allows attackers to crash the application by supplying an oversized registration

RemediationAI

Monitor vendor advisories for a patch. Enable ASLR, DEP/NX, and stack canaries where possible. Restrict network access to the affected service where possible.

CVE-2020-37202 vulnerability details – vuln.today

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CVE-2020-37202

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

Affected ProductsAI

RemediationAI

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External POC / Exploit Code