What is CVE-2020-16202?

CVE-2020-16202 is a high-severity vulnerability in Advantech Webaccess, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 7.8/10. Published 2020-09-22.

How severe is CVE-2020-16202?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Advantech Webaccess

CVE-2020-16202

WebAccess Node (All versions prior to 9.0.1) has incorrect permissions set for resources used by specific services, which may allow code execution with system privileges.

Published 2020-09-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (29.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 29.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Advantech Webaccess
Webaccess Node — versions All versions prior to 9.0.1

Weakness classification (CWE)

CWE-732 — Incorrect Permission Assignment for Critical Resource

References

us-cert.cisa.gov/ics/advisories/icsa-20-261-01 (US Government Resource, Third Party Advisory, Mitigation)

Frequently asked questions

What is CVE-2020-16202?: CVE-2020-16202 is a high-severity vulnerability in Advantech Webaccess, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 7.8/10. Published 2020-09-22.
How severe is CVE-2020-16202?: High severity. CVSS v3 base score is 7.8 out of 10.