Vulnerability in Fortinet Fortios

CVE-2026-106174

A improper locking vulnerability in Fortinet FortiOS 8.0.0, FortiOS 7.6.4 through 7.6.6 may allow an unauthenticated attacker with network access to the device to cause a denial of service of the HTTPS management interface via crafted HTTP requests.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-106174?
CVE-2026-106174 is a high-severity vulnerability in Fortinet Fortios, classified under Improper Locking. CVSS score: 7.5/10. Published 2026-10-27.
How severe is CVE-2026-106174?
High severity. CVSS v3 base score is 7.5 out of 10.