What is CVE-2021-43931?

CVE-2021-43931 is a critical-severity vulnerability in Distributed Data Systems Webhmi, classified under Improper Authentication. CVSS score: 9.8/10. Published 2021-12-06.

How severe is CVE-2021-43931?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in Distributed Data Systems Webhmi

CVE-2021-43931

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.

Vulnerability class: Broken Authentication

EPSS: 0.014 (69.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Distributed Data Systems Webhmi — versions 4.1
Webhmi
Webhmi Webhmi_firmware

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

ics-cert@hq.dhs.gov (US Government Resource, Patch, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-43931?: CVE-2021-43931 is a critical-severity vulnerability in Distributed Data Systems Webhmi, classified under Improper Authentication. CVSS score: 9.8/10. Published 2021-12-06.
How severe is CVE-2021-43931?: Critical severity. CVSS v3 base score is 9.8 out of 10.