CVE-2021-43936: Webhmi Firmware

Critical severity, CVSS 9.8. EPSS: 35.8% chance of exploitation in the next 30 days.

The software allows the attacker to upload or transfer files of dangerous types to the WebHMI portal, that may be automatically processed within the product's environment or lead to arbitrary code execution.

Affected products

• Webhmi Webhmi Firmware: before 4.1 (fixed in 4.1)

Published 2021-12-06. Last modified 2026-06-17.