CVE-2021-43936 is a critical arbitrary file upload vulnerability affecting WebHMI and WebHMI firmware, allowing attackers to upload dangerous file types that can lead to remote code execution. With a CVSS score of 9.8, it presents a severe risk due to its network-based attack vector, low complexity, and no user interaction required, potentially resulting in complete compromise of confidentiality, integrity, and availability. While not listed in CISA's KEV catalog or showing widespread community discussion, an authenticated remote code execution exploit is publicly available on ExploitDB, indicating a clear path for exploitation.
| 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:C/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.