CVE-2026-106174 Fortinet FortiOS - Denial of Service

Fortinet FortiOS 8.0.0, 7.6.4 through 7.6.6 contains a denial of service caused by improper locking in the HTTPS management interface, letting unauthenticated attackers with network access disrupt service via crafted HTTP requests.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.28% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
27 October 2026
Updated
29 October 2026
Weakness
CWE-667

Vendor fix

Update to the latest FortiOS version beyond 8.0.0 or 7.6.6.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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