CVE-2021-38408

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

A stack-based buffer overflow vulnerability in Advantech WebAccess Versions 9.02 and prior caused by a lack of proper validation of the length of user-supplied data may allow remote code execution.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-121

Affected software

Vendor	Product	Versions
n/a	Advantech WebAccess	WebAccess: Versions 9.02 and prior

References

https://us-cert.cisa.gov/ics/advisories/icsa-21-245-03Third Party Advisory, US Government Resource
https://us-cert.cisa.gov/ics/advisories/icsa-21-245-03Third Party Advisory, US Government Resource

Timeline

Published: Sep 9, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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