What is CVE-2020-9288?

CVE-2020-9288 is a medium-severity vulnerability in Fortinet Fortiwlc, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2020-06-22.

How severe is CVE-2020-9288?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Fortinet Fortiwlc

CVE-2020-9288

An improper neutralization of input vulnerability in FortiWLC 8.5.1 allows a remote authenticated attacker to perform a stored cross site scripting attack (XSS) via the ESS profile or the Radius Profile.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2020-06-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.009 (56.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 56.8% 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 Fortiwlc — versions FortiWLC 8.5.1
Fortinet Fortiwlc

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

fortiguard.com/advisory/FG-IR-20-016 (Vendor Advisory)

Frequently asked questions

What is CVE-2020-9288?: CVE-2020-9288 is a medium-severity vulnerability in Fortinet Fortiwlc, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2020-06-22.
How severe is CVE-2020-9288?: Medium severity. CVSS v3 base score is 5.4 out of 10.