CVE-2021-43936

critical

Description

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.

References

https://us-cert.cisa.gov/ics/advisories/icsa-21-336-03

https://blog.checkpoint.com/research/november-2024s-most-wanted-malware-androxgh0st-leads-the-pack-targeting-iot-devices-and-critical-infrastructure/

https://blog.checkpoint.com/security/october-2024s-most-wanted-malware-infostealers-surge-as-cyber-criminals-leverage-innovative-attack-vectors/

https://blog.checkpoint.com/research/july-2024s-most-wanted-malware-remcos-and-ransomhub-run-rampant/

https://blog.checkpoint.com/security/march-2024s-most-wanted-malware-hackers-discover-new-infection-chain-method-to-deliver-remcos/

http://packetstormsecurity.com/files/165252/WebHMI-4.0-Remote-Code-Execution.html

Details

Source: Mitre, NVD

Published: 2021-12-06

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

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