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CVE-2021-43936

10.0 · CRITICAL

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…

Published Dec 6, 2021CWE-434EPSS 35.80%

Overview

CVE-2021-43936 is a critical-severity vulnerability. It was published on December 6, 2021 and has a CVSS 3.1 base score of 10.0 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 10.0, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refpacketstormsecurity.com/files/165252/WebHMI-4.0-Remote-Code-Execution.htmlCISAus-cert.cisa.gov/ics/advisories/icsa-21-336-03Refpacketstormsecurity.com/files/165252/WebHMI-4.0-Remote-Code-Execution.htmlCISAus-cert.cisa.gov/ics/advisories/icsa-21-336-03

How CyberStrike helps

Frequently asked questions

What is CVE-2021-43936?

CVE-2021-43936 is a critical-severity vulnerability. It was published on December 6, 2021 and has a CVSS 3.1 base score of 10.0 (CRITICAL).

How severe is CVE-2021-43936?

This vulnerability has a CVSS 3.1 base score of 10.0, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-43936?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-43936?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-43936 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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