What is CVE-2018-14820?

CVE-2018-14820 is a high-severity vulnerability in Advantech Webaccess, classified under External Control of File Name or Path. CVSS score: 7.5/10. Published 2018-10-23.

How severe is CVE-2018-14820?

High severity. CVSS v3 base score is 7.5 out of 10.

Improper input validation in Advantech Webaccess

CVE-2018-14820

Advantech WebAccess 8.3.1 and earlier has a .dll component that is susceptible to external control of file name or path vulnerability, which may allow an arbitrary file deletion when processing.

Published 2018-10-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.022 (81.8th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000

Affected products

Advantech Webaccess — versions WebAccess Versions 8.3.1 and prior
Advantech Webaccess

Weakness classification (CWE)

References

www.securitytracker.com/id/1041939 (VDB Entry, Third Party Advisory, vdb-entry)
ics-cert.us-cert.gov/advisories/ICSA-18-296-01,
www.securityfocus.com/bid/105728 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2018-14820?: CVE-2018-14820 is a high-severity vulnerability in Advantech Webaccess, classified under External Control of File Name or Path. CVSS score: 7.5/10. Published 2018-10-23.
How severe is CVE-2018-14820?: High severity. CVSS v3 base score is 7.5 out of 10.