What is CVE-2020-37164?

CVE-2020-37164 is a medium-severity vulnerability in Celestial Software Absolutetelnet, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.2/10. Published 2026-02-07.

How severe is CVE-2020-37164?

Medium severity. CVSS v3 base score is 6.2 out of 10.

Buffer overflow in Celestial Software Absolutetelnet

CVE-2020-37164

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 entr…

Vulnerability class: Buffer Overflow

EPSS: 0.002 (12.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Celestial Software Absolutetelnet — versions 11.12
Celestialsoftware Absolutetelnet

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

disclosure@vulncheck.com (Exploit, VDB Entry, Third Party Advisory, exploit)
disclosure@vulncheck.com (Product, product)
disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2020-37164?: CVE-2020-37164 is a medium-severity vulnerability in Celestial Software Absolutetelnet, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.2/10. Published 2026-02-07.
How severe is CVE-2020-37164?: Medium severity. CVSS v3 base score is 6.2 out of 10.