What is CVE-2019-13558?

CVE-2019-13558 is a critical-severity vulnerability in Advantech Webaccess, classified under Code Injection. CVSS score: 9.8/10. Published 2019-09-18.

How severe is CVE-2019-13558?

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

RCE in Advantech Webaccess

CVE-2019-13558

In WebAccess versions 8.4.1 and prior, an exploit executed over the network may cause improper control of generation of code, which may allow remote code execution, data exfiltration, or cause a system crash.

Vulnerability class: RCE (Remote Code Execution)

Published 2019-09-18 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.029 (86.7th percentile), scored 2026-10-23.

Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 86.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.029 · newest: 0.029 · change: 0.000

Affected products

Advantech Webaccess
Webaccess — versions Versions 8.4.1 and prior

Weakness classification (CWE)

CWE-94 — Code Injection

References

www.us-cert.gov/ics/advisories/icsa-19-260-01 (US Government Resource, Third Party Advisory)

Frequently asked questions

What is CVE-2019-13558?: CVE-2019-13558 is a critical-severity vulnerability in Advantech Webaccess, classified under Code Injection. CVSS score: 9.8/10. Published 2019-09-18.
How severe is CVE-2019-13558?: Critical severity. CVSS v3 base score is 9.8 out of 10.