What is CVE-2020-15942?

CVE-2020-15942 is a medium-severity vulnerability in Fortinet Fortiweb, classified under Insufficiently Protected Credentials. CVSS score: 4.3/10. Published 2021-04-12.

How severe is CVE-2020-15942?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Fortinet Fortiweb

CVE-2020-15942

An information disclosure vulnerability in Web Vulnerability Scan profile of Fortinet's FortiWeb version 6.2.x below 6.2.4 and version 6.3.x below 6.3.5 may allow a remote authenticated attacker to read the password used by the FortiWeb scanner to access the device defined in the scan profile.

Published 2021-04-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.009 (59.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Fortinet Fortiweb — versions FortiWeb 6.3.4, 6.2.3
Fortinet Fortiweb

Weakness classification (CWE)

CWE-522 — Insufficiently Protected Credentials

References

fortiguard.com/advisory/FG-IR-20-076 (Vendor Advisory)
www.fortiguard.com/psirt/FG-IR-20-076 (Vendor Advisory)

Frequently asked questions

What is CVE-2020-15942?: CVE-2020-15942 is a medium-severity vulnerability in Fortinet Fortiweb, classified under Insufficiently Protected Credentials. CVSS score: 4.3/10. Published 2021-04-12.
How severe is CVE-2020-15942?: Medium severity. CVSS v3 base score is 4.3 out of 10.