Vulnerability 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.
CVSS Score
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Webhmi | Webhmi Firmware | < 4.1 |
| Webhmi | Webhmi | - |
Related Weaknesses (CWE)
References
- https://us-cert.cisa.gov/ics/advisories/icsa-21-336-03PatchThird Party AdvisoryUS Government Resource
- https://us-cert.cisa.gov/ics/advisories/icsa-21-336-03PatchThird Party AdvisoryUS Government Resource
FAQ
What is CVE-2021-43931?
CVE-2021-43931 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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.
How severe is CVE-2021-43931?
CVE-2021-43931 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2021-43931?
Check the references section above for vendor advisories and patch information. Affected products include: Webhmi Webhmi Firmware, Webhmi Webhmi.