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Case File

CVE-2018-20764

CRITICAL · CVSS 9.8 EPSS 1.19% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2019-02-08 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. It affects Linux. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2018-20764
Severity
CRITICAL
CVSS
9.8
EPSS
1.19%
Linux

Original NVD 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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)