What is CVE-2021-38408?

CVE-2021-38408 is a critical-severity vulnerability in Advantech Webaccess, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2021-09-09.

How severe is CVE-2021-38408?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Advantech Webaccess

CVE-2021-38408

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.

Vulnerability class: Buffer Overflow

EPSS: 0.116 (95.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Advantech Webaccess
N/a Advantech Webaccess — versions WebAccess: Versions 9.02 and prior

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

References

ics-cert@hq.dhs.gov (US Government Resource, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-38408?: CVE-2021-38408 is a critical-severity vulnerability in Advantech Webaccess, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2021-09-09.
How severe is CVE-2021-38408?: Critical severity. CVSS v3 base score is 9.8 out of 10.