CVE-2021-33004: Advantech Webaccess/hmi Designer

High severity, CVSS 7.8. EPSS: 1% chance of exploitation in the next 30 days.

The affected product is vulnerable to memory corruption condition due to lack of proper validation of user supplied files, which may allow an attacker to execute arbitrary code. User interaction is required on the WebAccess HMI Designer (versions 2.1.9.95 and prior).

Affected products

• Advantech Webaccess/hmi Designer: up to and including 2.1.9.95

Published 2021-06-24. Last modified 2026-06-17.