CVE-2020-37166 - CVE House
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Status published Medium CVE-2020-37166

AbsoluteTelnet 11.12 - 'SSH2/username' Denial of Service

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • chuyreds

References

More from Celestial Software

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CVE-2020-37165
AbsoluteTelnet 11.12 - "license name" Denial of Service
Medium 6.7
CVE-2020-37164
AbsoluteTelnet 11.12 - "license entry" Denial of Service
Medium 6.7

Affected Vendor

Celestial Software

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Affected Software

AbsoluteTelnet
Vulnerable Versions:
11.12

Timeline

Official Publish: February 6th, 2026
Last Modified: February 17th, 2026
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

CWE-120

MITRE ATT&CK TTPs

T1203 Exploitation for Client Execution
Execution
T1068 Exploitation for Privilege Escalation
Privilege Escalation
T1055 Process Injection
Defense Evasion
T1105 Ingress Tool Transfer
Command and Control