What’s Vulnerable › Vulnerabilities

CVE-2021-43931: Distributed Data Systems WebHM

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-12-06 · updated 2026-06-17
• Weakness: CWE-287

Description

The authentication algorithm of the WebHMI portal is sound, but the implemented mechanism can be bypassed as the result of a separate weakness that is primary to the authentication error.

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

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

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