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.
Published: 2026-02-06
Score: 6.9 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Thu, 19 Feb 2026 19:00:00 +0000

Type Values Removed Values Added
First Time appeared Celestialsoftware
Celestialsoftware absolutetelnet
CPEs cpe:2.3:a:celestialsoftware:absolutetelnet:11.12:*:*:*:*:*:*:*
Vendors & Products Celestialsoftware
Celestialsoftware absolutetelnet

Tue, 17 Feb 2026 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

 ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 10 Feb 2026 21:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 09 Feb 2026 11:00:00 +0000

Type Values Removed Values Added
First Time appeared Celestial Software
Celestial Software absolutetelnet
Vendors & Products Celestial Software
Celestial Software absolutetelnet

Fri, 06 Feb 2026 23:30:00 +0000

Type Values Removed Values Added
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.
Title AbsoluteTelnet 11.12 - 'SSH2/username' Denial of Service
Weaknesses CWE-120
References
Metrics cvssV3_1

{'score': 6.2, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

Celestial Software Absolutetelnet
Celestialsoftware Absolutetelnet
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-02-17T16:54:51.820Z

Reserved: 2026-02-06T12:29:50.763Z

Link: CVE-2020-37166

cve-icon Vulnrichment

Updated: 2026-02-10T20:33:49.047Z

cve-icon NVD

Status : Analyzed

Published: 2026-02-07T00:15:57.117

Modified: 2026-02-19T18:52:13.997

Link: CVE-2020-37166

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-02-09T10:45:16Z

Weaknesses