What is CVE-2018-9190?

CVE-2018-9190 is a medium-severity vulnerability in Fortinet Forticlient, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2019-02-08.

How severe is CVE-2018-9190?

Medium severity. CVSS v3 base score is 5.5 out of 10.

NULL pointer dereference in Fortinet Forticlient

CVE-2018-9190

A null pointer dereference vulnerability in Fortinet FortiClientWindows 6.0.2 and earlier allows attacker to cause a denial of service via the NDIS miniport driver.

Published 2019-02-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.004 (35.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 35.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000

Affected products

Fortinet Forticlient
Fortinet, Inc. Fortinet Forticlientwindows — versions FortiClientWindows 6.0.2 and earlier

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

fortiguard.com/advisory/FG-IR-18-092 (Third Party Advisory)

Frequently asked questions

What is CVE-2018-9190?: CVE-2018-9190 is a medium-severity vulnerability in Fortinet Forticlient, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2019-02-08.
How severe is CVE-2018-9190?: Medium severity. CVSS v3 base score is 5.5 out of 10.