CVE-2018-20764

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

A buffer overflow exists in HelpSystems tcpcrypt on Linux, used for BoKS encrypted telnet through BoKS version 6.7.1. Since tcpcrypt is setuid, exploitation leads to privilege escalation.

Metrics

CVSS 3.0 9.8/10CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected software

No affected versions have been published.

Timeline

Published: Feb 8, 2019
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2018

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