What is CVE-2021-42703?

CVE-2021-42703 is a medium-severity vulnerability in Advantech Hmi Designer, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-11-15.

How severe is CVE-2021-42703?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Advantech Hmi Designer

CVE-2021-42703

This vulnerability could allow an attacker to send malicious Javascript code resulting in hijacking of the user’s cookie/session tokens, redirecting the user to a malicious webpage, and performing unintended browser action.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.006 (45.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.

Affected products

Advantech Hmi Designer — versions All versions
Advantech Webaccess_hmi_designer

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

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

Frequently asked questions

What is CVE-2021-42703?: CVE-2021-42703 is a medium-severity vulnerability in Advantech Hmi Designer, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-11-15.
How severe is CVE-2021-42703?: Medium severity. CVSS v3 base score is 5.4 out of 10.