What is the CVSS score of CVE-2020-37166?

CVE-2020-37166 has a CVSS 3.1 base score of 6.2 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.0%.

Which versions of Absolutetelnet are affected by CVE-2020-37166?

Organizations using AbsoluteTelnet 11.12 should be aware of moderate risk from CVE-2020-37166, a buffer overflow vulnerability rated CVSS 6.2.

Is there a public PoC exploit available for CVE-2020-37166?

Yes, a public proof-of-concept exploit is available for CVE-2020-37166. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2020-37166?

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

Absolutetelnet CVE-2020-37166

MEDIUM

Classic Buffer Overflow (CWE-120)

2026-02-07 disclosure@vulncheck.com

Denial Of Service Absolutetelnet

6.2

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.2 MEDIUM

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Feb 19, 2026 - 18:52 vuln.today

Public exploit code

CVE Published

Feb 07, 2026 - 00:15 nvd

MEDIUM 6.2

DescriptionCVE.org

AbsoluteTelnet 11.12 contains a denial of service vulnerability in the SSH2 username input field that allows local attackers to crash the application. Attackers can overwrite the username field with a 1000-byte buffer, causing the application to become unresponsive and terminate.

AnalysisAI

Technical ContextAI

Classified as CWE-120 (Classic Buffer Overflow). Affects Absolutetelnet. AbsoluteTelnet 11.12 contains a denial of service vulnerability in the SSH2 username input field that allows local attackers to crash the application. Attackers can overwrite the username field with a 1000-byte buffer, causing the application to become unresponsive and terminate.

RemediationAI

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

CVE-2020-37166 vulnerability details – vuln.today

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Absolutetelnet CVE-2020-37166

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

RemediationAI

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External POC / Exploit Code