CVE-2021-42073

HighCVSS 8.2/10Last modified Jun 17, 2026

Description

An issue was discovered in Barrier before 2.4.0. An attacker can enter an active session state with the barriers component (aka the server-side implementation of Barrier) simply by supplying a client label that identifies a valid client configuration. This label is "Unnamed" by default but could instead be guessed from hostnames or other publicly available information. In the active session state, an attacker can capture input device events from the server, and also modify the clipboard content on the server.

Metrics

CVSS 3.1 8.2/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Nov 8, 2021
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2021-42073: High severity, CVSS 8.2 | Vulnix