CVE-2021-42074 is a high-severity vulnerability affecting Barrier before version 2.3.4, where an unauthenticated attacker can trigger a segmentation fault in the server-side component by rapidly opening and closing TCP connections while sending "Hello" messages. This denial-of-service vulnerability has a CVSS score of 7.5, indicating a high impact on availability with low attack complexity and no user interaction required. There is currently no evidence of active exploitation, nor is there publicly available exploit code in Metasploit or ExploitDB, and it has received minimal community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 2.3.4CPE matchmatch criteria | cpe:2.3:a:barrier_project:barrier:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.