AbsoluteTelnet 11.12 contains a denial of service vulnerability that allows local attackers to crash the application by supplying an oversized license name. Attackers can generate a 2500-character payload and paste it into the license entry field to trigger an application crash.

Attack Vector Local

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction Active

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Celestial Software AbsoluteTelnet affected
Version Status Constraints
11.12 affected —

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Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://www.celestialsoftware.net/ cve-icon cve-icon
https://www.exploit-db.com/exploits/48005 cve-icon cve-icon
https://www.vulncheck.com/advisories/absolutetelnet-license-entry-denial-of-service cve-icon cve-icon
History

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

Type Values Removed Values Added
Description AbsoluteTelnet 11.12 contains a denial of service vulnerability that allows local attackers to crash the application by supplying an oversized license name. Attackers can generate a 2500-character payload and paste it into the license entry field to trigger an application crash.
Title AbsoluteTelnet 11.12 - "license entry" 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': 6.7, '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-02-06T23:14:12.124Z

Reserved: 2026-02-06T12:29:29.674Z

Link: CVE-2020-37164

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-02-07T00:15:56.787

Modified: 2026-02-07T00:15:56.787

Link: CVE-2020-37164

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses