What is CVE-2020-13550?

CVE-2020-13550 is a high-severity vulnerability in Advantech Webaccess\/scada, classified under Path Traversal. CVSS score: 7.7/10. Published 2021-02-17.

How severe is CVE-2020-13550?

High severity. CVSS v3 base score is 7.7 out of 10.

Path Traversal in Advantech Webaccess\/scada

CVE-2020-13550

A local file inclusion vulnerability exists in the installation functionality of Advantech WebAccess/SCADA 9.0.1. A specially crafted application can lead to information disclosure. An attacker can send an authenticated HTTP request to trigger this vulnerability.

Vulnerability class: Path Traversal (Directory Traversal)

Published 2021-02-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.035 (88.7th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 88.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.035 · newest: 0.035 · change: 0.000

Affected products

Advantech Webaccess\/scada — versions 9.0.1
Advantech — versions Advantech WebAccess/SCADA 9.0.1

Weakness classification (CWE)

CWE-22 — Path Traversal

References

talosintelligence.com/vulnerability_reports/TALOS-2020-1168 (Technical Description, Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-13550?: CVE-2020-13550 is a high-severity vulnerability in Advantech Webaccess\/scada, classified under Path Traversal. CVSS score: 7.7/10. Published 2021-02-17.
How severe is CVE-2020-13550?: High severity. CVSS v3 base score is 7.7 out of 10.