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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.

PUBLISHED Reserved 2026-02-06 | Published 2026-02-06 | Updated 2026-02-17 | Assigner VulnCheck




MEDIUM: 6.7CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
MEDIUM: 6.2CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem types

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Product status

11.12
affected

Credits

chuyreds finder

References

www.exploit-db.com/exploits/48005 (ExploitDB-48005) exploit

www.celestialsoftware.net/ (Vendor Homepage) product

www.vulncheck.com/...etelnet-license-entry-denial-of-service (VulnCheck Advisory: AbsoluteTelnet 11.12 - "license entry" Denial of Service) third-party-advisory

cve.org (CVE-2020-37164)

nvd.nist.gov (CVE-2020-37164)

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