CVE-2021-33000

7.8 highEPSS 1.0%

High (7.8) in advantech webaccess\/hmi designer. EPSS 1.0% chance of exploitation in the next 30 days.

Parsing a maliciously crafted project file may cause a heap-based buffer overflow, which may allow an attacker to perform arbitrary code execution. User interaction is required on the WebAccess HMI Designer (versions 2.1.9.95 and prior).

Severity

CVSS 3.1

7.8 high

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

EPSS: 1.0% chance of exploitation in the next 30 days; higher than 64% of CVEs (scores of 2026-10-31)
CWEs: CWE-787, CWE-122
Published: 2021-06-24
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

advantech:webaccess\/hmi_designer

References

https://us-cert.cisa.gov/ics/advisories/icsa-21-173-01
https://us-cert.cisa.gov/ics/advisories/icsa-21-173-01

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