What is CVE-2019-5589?

CVE-2019-5589 is a high-severity vulnerability in Fortinet Forticlient, classified under Untrusted Search Path. CVSS score: 7.8/10. Published 2019-05-28.

How severe is CVE-2019-5589?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Fortinet Forticlient

CVE-2019-5589

An Unsafe Search Path vulnerability in FortiClient Online Installer (Windows version before 6.0.6) may allow an unauthenticated, remote attacker with control over the directory in which FortiClientOnlineInstaller.exe resides to execute arbitrary code on the system via uploading malicious .dll files in that directory.

Published 2019-05-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.026 (84.8th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 84.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.026 · newest: 0.026 · change: 0.000

Affected products

Fortinet Forticlient
Fortinet Forticlient For Windows — versions FortiClient for Windows version below 6.0.6

Weakness classification (CWE)

CWE-426 — Untrusted Search Path

References

fortiguard.com/advisory/FG-IR-19-060 (Vendor Advisory)

Frequently asked questions

What is CVE-2019-5589?: CVE-2019-5589 is a high-severity vulnerability in Fortinet Forticlient, classified under Untrusted Search Path. CVSS score: 7.8/10. Published 2019-05-28.
How severe is CVE-2019-5589?: High severity. CVSS v3 base score is 7.8 out of 10.