CVE-2021-43931 | BDVDB-2026-165207 Detail

Distributed Data SystemsWebHMI

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.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: network.

Weaknesses#

No weakness recorded in the source data.

References#

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

Exploit#

No public exploit known

History#

Version 12021-12-06Record published in the CVE List.
Version 22024-08-04Most recent update recorded in the CVE List.

Published

Published: 2021-12-06
Last modified: 2024-08-04

Vendor information

Vendor: Distributed Data Systems
Product: WebHMI

All Distributed Data Systems vulnerabilities

Score

9.8 Critical

EPSS

1.4%, Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 74.2.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= 4.1 and < 4.1
Fixed
4.1

Scoring System

CVSS v4.0

Not available

CVSS v3.1

9.8 Critical

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

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	High
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).