CVE-2021-43931 is a critical authentication bypass vulnerability affecting WebHMI portal and firmware products. While the authentication algorithm itself is sound, a separate weakness allows attackers to bypass the implemented mechanism. This vulnerability has a CVSS score of 9.8 (CRITICAL), indicating it can be exploited remotely with low complexity, requiring no user interaction, and leading to complete compromise of confidentiality, integrity, and availability. Currently, there is no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 4.1CPE matchmatch criteria | cpe:2.3:o:webhmi:webhmi_firmware:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.