What’s Vulnerable › Vulnerabilities

CVE-2021-43936: Distributed Data Systems WebHM

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 35.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-12-06 · updated 2026-06-17
• Weakness: CWE-434

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.

Affected products

• Distributed Data Systems WebHMI: before 4.1 — fixed in 4.1

How to fix

Upgrade to a fixed version: Distributed Data Systems WebHMI 4.1. Check the vendor advisory for mitigations.

References

• http://packetstormsecurity.com/files/165252/WebHMI-4.0-Remote-Code-Execution.html
• https://us-cert.cisa.gov/ics/advisories/icsa-21-336-03
• http://packetstormsecurity.com/files/165252/WebHMI-4.0-Remote-Code-Execution.html
• https://us-cert.cisa.gov/ics/advisories/icsa-21-336-03

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