---
id: CVE-2020-37165
title: AbsoluteTelnet 11.12 - "license name" Denial of Service
summary: >-
  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 na…
severity: medium
cvss: 6.2
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cvssSource: cna
cwe:
  - CWE-120
vendor: Celestial Software
product: AbsoluteTelnet
affected:
  - AbsoluteTelnet 11.12
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-02-17T16:55:07.899497Z'
exploitAvailable: true
published: '2026-02-06'
updated: '2026-10-01'
sourceUpdated: '2026-10-01T15:19:36.341Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2020-37165'
references:
  - url: 'https://www.exploit-db.com/exploits/48006'
    label: ExploitDB-48006
  - url: 'https://www.celestialsoftware.net/'
    label: Vendor Homepage
  - url: >-
      https://www.vulncheck.com/advisories/absolutetelnet-license-name-denial-of-service
    label: >-
      VulnCheck Advisory: AbsoluteTelnet 11.12 - "license name" Denial of
      Service
tags:
  - cve.org
  - exploit-available
epss: 0.00236
epssPercentile: 0.13153
ingestedAt: '2026-10-01T15:48:17.875Z'
---

## Overview

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 name field to trigger an application crash.

## Affected

- `AbsoluteTelnet 11.12`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.