What is CVE-2026-39810?

CVE-2026-39810 is a medium-severity vulnerability in Fortinet Forticlientems, classified under Use of Hard-coded Cryptographic Key. CVSS score: 6.0/10. Published 2026-04-14.

How severe is CVE-2026-39810?

Medium severity. CVSS v3 base score is 6.0 out of 10.

Vulnerability in Fortinet Forticlientems

CVE-2026-39810

A use of hard-coded cryptographic key vulnerability in Fortinet FortiClientEMS 7.4.0 through 7.4.5 may allow attacker to information disclosure via decrypting database dump.

Published 2026-04-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.001 (3.6th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 3.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000

Affected products

Fortinet Forticlientems — versions 7.4.3, 7.4.0

Weakness classification (CWE)

CWE-321 — Use of Hard-coded Cryptographic Key

References

fortiguard.fortinet.com/psirt/FG-IR-26-107 (Vendor Advisory)

Frequently asked questions

What is CVE-2026-39810?: CVE-2026-39810 is a medium-severity vulnerability in Fortinet Forticlientems, classified under Use of Hard-coded Cryptographic Key. CVSS score: 6.0/10. Published 2026-04-14.
How severe is CVE-2026-39810?: Medium severity. CVSS v3 base score is 6.0 out of 10.