What is CVE-2026-39814?

CVE-2026-39814 is a medium-severity vulnerability in Fortinet Fortiweb, classified under Relative Path Traversal. CVSS score: 6.2/10. Published 2026-04-14.

How severe is CVE-2026-39814?

Medium severity. CVSS v3 base score is 6.2 out of 10.

Path Traversal in Fortinet Fortiweb

CVE-2026-39814

A relative path traversal vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.2, FortiWeb 7.6.0 through 7.6.6, FortiWeb 7.4.1 through 7.4.12, FortiWeb 7.2.7 through 7.2.12, FortiWeb 7.0.10 through 7.0.12 may allow attacker to execute unau…

EPSS: 0.000 (7.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C.

Affected products

Fortinet Fortiweb — versions 8.0.0, 7.6.0, 7.4.1

Weakness classification (CWE)

CWE-23 — Relative Path Traversal

References

https://fortiguard.fortinet.com/psirt/FG-IR-26-114

Frequently asked questions

What is CVE-2026-39814?: CVE-2026-39814 is a medium-severity vulnerability in Fortinet Fortiweb, classified under Relative Path Traversal. CVSS score: 6.2/10. Published 2026-04-14.
How severe is CVE-2026-39814?: Medium severity. CVSS v3 base score is 6.2 out of 10.