What is CVE-2026-59839?

CVE-2026-59839 is a medium-severity vulnerability in Fortinet Fortios, classified under Path Traversal. CVSS score: 5.5/10. Published 2026-07-14.

How severe is CVE-2026-59839?

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

Path Traversal in Fortinet Fortios

CVE-2026-59839

A improper limitation of a pathname to a restricted directory ('path traversal') vulnerability in Fortinet FortiOS 7.6.0 through 7.6.6, FortiOS 7.4.0 through 7.4.9, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4 all versio…

Vulnerability class: Path Traversal (Directory Traversal)

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H.

Affected products

Fortinet Fortios — versions 7.6.0, 7.4.0, 7.2.0
Fortinet Fortipam — versions 1.8.0, 1.7.0, 1.6.0
Fortinet Fortiproxy — versions 7.6.0, 7.4.0, 7.2.0

Weakness classification (CWE)

CWE-22 — Path Traversal

References

psirt@fortinet.com

Frequently asked questions

What is CVE-2026-59839?: CVE-2026-59839 is a medium-severity vulnerability in Fortinet Fortios, classified under Path Traversal. CVSS score: 5.5/10. Published 2026-07-14.
How severe is CVE-2026-59839?: Medium severity. CVSS v3 base score is 5.5 out of 10.