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Vulnerabilities

Vulnerability · CVE-2020-37165

AbsoluteTelnet 11.12 contains a denial of service vulnerability that allows local attackers to crash the application by supplying an oversized license name.

Published Feb 6, 2026 · catalog updated Oct 1, 2026 · Celestial Software AbsoluteTelnet

Last checked Nov 5, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2020-37165. EPSS is 0.25%. Act only if a listed version of Celestial Software AbsoluteTelnet is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Medium6.7
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.25%
Remediation
Vendor / distro source
Affected products
vendor Celestial Software AbsoluteTelnet 11.12

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Celestial Software AbsoluteTelnet 11.1211.12

How to fix CVE-2020-37165

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2020-37165. EPSS is 0.25%. Act only if a listed version of Celestial Software AbsoluteTelnet is installed.

Which versions are affected?

Compare what you have installed with Celestial Software AbsoluteTelnet 11.12 11.12. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.25%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 6, 2026 · EUVD

    Detected

    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.

  2. Oct 1, 2026 · EUVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2020-37165

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2020-37165

    30-day exploitation probability 0.25%

    first.org
  • EUVDVulnerability recordEUVD-2020-31116

    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.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 5, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 5, 2026
  • CVE.orgNov 4, 2026
  • EUVDNov 2, 2026