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 entry field to trigger an application crash.
Vulnerability class: Buffer Overflow
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.002 (13.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 13.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Celestial Software Absolutetelnet — versions 11.12
- Celestialsoftware Absolutetelnet
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/48005 (Exploit, VDB Entry, Third Party Advisory, exploit)
- www.celestialsoftware.net/ (Product, product)
- www.vulncheck.com/advisories/absolutetelnet-license-entry-denial-of-service (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.