What is CVE-2019-3942?

CVE-2019-3942 is a high-severity vulnerability in Advantech Webaccess, classified under Improper Access Control. CVSS score: 7.5/10. Published 2020-04-01.

How severe is CVE-2019-3942?

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

Vulnerability in Advantech Webaccess

CVE-2019-3942

Advantech WebAccess 8.3.4 does not properly restrict an RPC call that allows unauthenticated, remote users to read files. An attacker can use this vulnerability to recover the administrator password.

Published 2020-04-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.014 (71.5th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 71.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Advantech Webaccess — versions 8.3.4
Advantech Webaccess — versions 8.3.4

Weakness classification (CWE)

References

www.tenable.com/security/research/tra-2019-15 (Third Party Advisory)

Frequently asked questions

What is CVE-2019-3942?: CVE-2019-3942 is a high-severity vulnerability in Advantech Webaccess, classified under Improper Access Control. CVSS score: 7.5/10. Published 2020-04-01.
How severe is CVE-2019-3942?: High severity. CVSS v3 base score is 7.5 out of 10.