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Case File

CVE-2021-42074

HIGH · CVSS 7.5 EPSS 1.70% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-11-08 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. Public exploit code or proof-of-concept references have been detected in its references. Exploitation may require the attacker to be authenticated.

Public Exploit Signal

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

GitHub PoC Links

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

CVE
CVE-2021-42074
Severity
HIGH
CVSS
7.5
EPSS
1.70%

Original NVD Description

An issue was discovered in Barrier before 2.3.4. An unauthenticated attacker can cause a segmentation fault in the barriers component (aka the server-side implementation of Barrier) by quickly opening and closing TCP connections while sending a Hello message for each TCP session.

Related CVEs

Other vulnerabilities affecting the same vendor(s)