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CVE-2026-71408: Denial of service in Fortinet FortiOS

0
Medium
VulnerabilityCVE-2026-71408cvecve-2026-71408
Published: 08/12/2026 (08/12/2026, 12:19:00 UTC)
Source: CVE Database V5
Vendor/Project: Fortinet
Product: FortiOS

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>

CVSS v3.1

Score 5.0medium

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
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

Affected software

Fortinet

FortiOS

Affected versions
>=7.6.0 <=7.6.6>=7.4.0 <=7.4.12>=7.2.0 <=7.2.13>=7.0.0 <=7.0.19>=6.4.0 <=6.4.16

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 08/12/2026, 12:58:37 UTC

Technical Analysis

This vulnerability in Fortinet FortiOS involves uncontrolled allocation of resources without limits or throttling, which may allow an attacker to cause a denial of service condition. It affects FortiOS versions 7.6.0 through 7.6.6, all 7.4 versions, and all 7.2 versions. The CVSS 3.1 base score is 5.0, indicating medium severity. The vulnerability has been officially fixed by Fortinet, and patches are available.

Potential Impact

Successful exploitation can cause denial of service by exhausting system resources, impacting availability of FortiOS devices. There is no impact on confidentiality or integrity. No known exploits are reported in the wild at this time.

Mitigation Recommendations

Apply the official patches provided by Fortinet for FortiOS versions 7.6.0 through 7.6.6, all 7.4 versions, and all 7.2 versions to remediate this vulnerability. Since an official fix is available, updating to patched versions is the recommended mitigation.

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Technical Details

Data Version
5.2
Assigner Short Name
fortinet
Date Reserved
2026-08-06T12:21:13.400Z
Cvss Version
3.1
State
PUBLISHED
Remediation Level
official-fix

Threat ID: 6a7c6a15bf8831d5398b361a

Added to database: 08/12/2026, 12:41:57 UTC

Last enriched: 08/12/2026, 12:58:37 UTC

Last updated: 09/27/2026, 01:47:44 UTC

Views: 60

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