CVE-2026-71408

Published Aug 12, 2026 CVSS 3.1 · 5 Medium EPSS < 1% KEV · Not listed

Description

A allocation of resources without limits or throttling vulnerability in Fortinet FortiOS 7.6.0 through 7.6.6, FortiOS 7.4 all versions, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4 all versions may allow an unauthenticated attacker to perform a slow HTTP DoS attack on the web interface via crafted HTTP requests.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Fortinet

FortiOS

unaffected

Version	Status	Constraints
`7.6.0`	affected	≤ 7.6.6
`7.4.0`	affected	≤ 7.4.13
`7.2.0`	affected	≤ 7.2.14
`7.0.0`	affected	≤ 7.0.19
`6.4.0`	affected	≤ 6.4.16

Configuration 1 [-]

cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*

No data.

Vendor Product Versions

Fortinet

Fortios

Version	Status	Scheme	Platform
`[7.6.0,7.6.6]`	affected	semver	—
`[7.4.0,7.4.12]`	affected	semver	—
`[7.2.0,7.2.13]`	affected	semver	—
`[7.0.0,7.0.19]`	affected	semver	—
`[6.4.0,6.4.16]`	affected	semver	—

Remediation

Vendor Solution

Upgrade to FortiOS version 8.0.0 or above Upgrade to FortiOS version 7.6.7 or above

Tracking

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.624% probability within 30 days)

Exploitation none

Automatable yes

Technical Impact partial

References

Link	Providers
https://cert-portal.siemens.com/productcert/html/ssa-127084.html
https://fortiguard.fortinet.com/psirt/FG-IR-26-162

History

Oct 30, 2026 12:30 AM Title updated View changes

Type	Values Removed	Values Added
Title	Resource Exhaustion Allowing Denial of Service in Fortinet FortiOS

Oct 29, 2026 4:30 PM Description updated. Affected versions updated View changes

Type	Values Removed	Values Added
Description	A allocation of resources without limits or throttling vulnerability in Fortinet FortiOS 7.6.0 through 7.6.6, FortiOS 7.4 all versions, FortiOS 7.2 all versions may allow attacker to denial of service via <insert attack vector here>	A allocation of resources without limits or throttling vulnerability in Fortinet FortiOS 7.6.0 through 7.6.6, FortiOS 7.4 all versions, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4 all versions may allow an unauthenticated attacker to perform a slow HTTP DoS attack on the web interface via crafted HTTP requests.
CPEs		cpe:2.3:o:fortinet:fortios:7.2.14:::::::* cpe:2.3:o:fortinet:fortios:7.4.13:::::::*

Oct 15, 2026 2:30 AM Added references View changes

Type	Values Removed	Values Added
References		https://cert-portal.siemens.com/productcert/html/ssa-127084.html

Sep 8, 2026 9:00 PM Affected versions updated View changes

Type	Values Removed	Values Added
CPEs		cpe:2.3:o:fortinet:fortios::::::::

Aug 13, 2026 1:30 AM Title updated View changes

Type	Values Removed	Values Added
Title		Resource Exhaustion Allowing Denial of Service in Fortinet FortiOS

Aug 12, 2026 2:30 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Aug 12, 2026 12:30 PM Description updated. First appearance in the feed. Weaknesses updated. Affected versions updated. Affected vendors updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		A allocation of resources without limits or throttling vulnerability in Fortinet FortiOS 7.6.0 through 7.6.6, FortiOS 7.4 all versions, FortiOS 7.2 all versions may allow attacker to denial of service via <insert attack vector here>
First Time appeared		Fortinet Fortinet fortios
Weaknesses		CWE-770
CPEs		cpe:2.3:o:fortinet:fortios:6.4.0:::::::* cpe:2.3:o:fortinet:fortios:6.4.10:::::::* cpe:2.3:o:fortinet:fortios:6.4.11:::::::* cpe:2.3:o:fortinet:fortios:6.4.12:::::::* cpe:2.3:o:fortinet:fortios:6.4.13:::::::* cpe:2.3:o:fortinet:fortios:6.4.14:::::::* cpe:2.3:o:fortinet:fortios:6.4.15:::::::* cpe:2.3:o:fortinet:fortios:6.4.16:::::::* cpe:2.3:o:fortinet:fortios:6.4.1:::::::* cpe:2.3:o:fortinet:fortios:6.4.2:::::::* cpe:2.3:o:fortinet:fortios:6.4.3:::::::* cpe:2.3:o:fortinet:fortios:6.4.4:::::::* cpe:2.3:o:fortinet:fortios:6.4.5:::::::* cpe:2.3:o:fortinet:fortios:6.4.6:::::::* cpe:2.3:o:fortinet:fortios:6.4.7:::::::* cpe:2.3:o:fortinet:fortios:6.4.8:::::::* cpe:2.3:o:fortinet:fortios:6.4.9:::::::* cpe:2.3:o:fortinet:fortios:7.0.0:::::::* cpe:2.3:o:fortinet:fortios:7.0.10:::::::* cpe:2.3:o:fortinet:fortios:7.0.11:::::::* cpe:2.3:o:fortinet:fortios:7.0.12:::::::* cpe:2.3:o:fortinet:fortios:7.0.13:::::::* cpe:2.3:o:fortinet:fortios:7.0.14:::::::* cpe:2.3:o:fortinet:fortios:7.0.15:::::::* cpe:2.3:o:fortinet:fortios:7.0.16:::::::* cpe:2.3:o:fortinet:fortios:7.0.17:::::::* cpe:2.3:o:fortinet:fortios:7.0.18:::::::* cpe:2.3:o:fortinet:fortios:7.0.19:::::::* cpe:2.3:o:fortinet:fortios:7.0.1:::::::* cpe:2.3:o:fortinet:fortios:7.0.2:::::::* cpe:2.3:o:fortinet:fortios:7.0.3:::::::* cpe:2.3:o:fortinet:fortios:7.0.4:::::::* cpe:2.3:o:fortinet:fortios:7.0.5:::::::* cpe:2.3:o:fortinet:fortios:7.0.6:::::::* cpe:2.3:o:fortinet:fortios:7.0.7:::::::* cpe:2.3:o:fortinet:fortios:7.0.8:::::::* cpe:2.3:o:fortinet:fortios:7.0.9:::::::* cpe:2.3:o:fortinet:fortios:7.2.0:::::::* cpe:2.3:o:fortinet:fortios:7.2.10:::::::* cpe:2.3:o:fortinet:fortios:7.2.11:::::::* cpe:2.3:o:fortinet:fortios:7.2.12:::::::* cpe:2.3:o:fortinet:fortios:7.2.13:::::::* cpe:2.3:o:fortinet:fortios:7.2.1:::::::* cpe:2.3:o:fortinet:fortios:7.2.2:::::::* cpe:2.3:o:fortinet:fortios:7.2.3:::::::* cpe:2.3:o:fortinet:fortios:7.2.4:::::::* cpe:2.3:o:fortinet:fortios:7.2.5:::::::* cpe:2.3:o:fortinet:fortios:7.2.6:::::::* cpe:2.3:o:fortinet:fortios:7.2.7:::::::* cpe:2.3:o:fortinet:fortios:7.2.8:::::::* cpe:2.3:o:fortinet:fortios:7.2.9:::::::* cpe:2.3:o:fortinet:fortios:7.4.0:::::::* cpe:2.3:o:fortinet:fortios:7.4.10:::::::* cpe:2.3:o:fortinet:fortios:7.4.11:::::::* cpe:2.3:o:fortinet:fortios:7.4.12:::::::* cpe:2.3:o:fortinet:fortios:7.4.1:::::::* cpe:2.3:o:fortinet:fortios:7.4.2:::::::* cpe:2.3:o:fortinet:fortios:7.4.3:::::::* cpe:2.3:o:fortinet:fortios:7.4.4:::::::* cpe:2.3:o:fortinet:fortios:7.4.5:::::::* cpe:2.3:o:fortinet:fortios:7.4.6:::::::* cpe:2.3:o:fortinet:fortios:7.4.7:::::::* cpe:2.3:o:fortinet:fortios:7.4.8:::::::* cpe:2.3:o:fortinet:fortios:7.4.9:::::::* cpe:2.3:o:fortinet:fortios:7.6.0:::::::* cpe:2.3:o:fortinet:fortios:7.6.1:::::::* cpe:2.3:o:fortinet:fortios:7.6.2:::::::* cpe:2.3:o:fortinet:fortios:7.6.3:::::::* cpe:2.3:o:fortinet:fortios:7.6.4:::::::* cpe:2.3:o:fortinet:fortios:7.6.5:::::::* cpe:2.3:o:fortinet:fortios:7.6.6:::::::*
Vendors & Products		Fortinet Fortinet fortios
References		https://fortiguard.fortinet.com/psirt/FG-IR-26-162
Metrics		cvssV3_1 `{'score': 5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C'}`