CVE-2026-21743

A missing authorization vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.6, FortiAuthenticator 6.5 all versions, FortiAuthenticator 6.4 all versions, FortiAuthenticator 6.3 all versions may allow a read-only user to make modification to local users via a file upload to an unprotected endpoint.

CVSS v3 7.2 HIGH

7.2^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://fortiguard.fortinet.com/psirt/FG-IR-25-528	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:fortinet:fortiauthenticator:*:*:*:*:*:*:*:*

History

17 Jun 2026, 10:18

Type	Values Removed	Values Added
Summary		(es) Una vulnerabilidad de autorización faltante en Fortinet FortiAuthenticator 6.6.0 hasta 6.6.6, FortiAuthenticator 6.5 todas las versiones, FortiAuthenticator 6.4 todas las versiones, FortiAuthenticator 6.3 todas las versiones puede permitir a un usuario de solo lectura realizar modificaciones a usuarios locales a través de una carga de archivo a un endpoint desprotegido.

12 Feb 2026, 16:05

Type	Values Removed	Values Added
CPE		cpe:2.3:a:fortinet:fortiauthenticator::::::::
First Time		Fortinet fortiauthenticator Fortinet
References	~~() https://fortiguard.fortinet.com/psirt/FG-IR-25-528 -~~	() https://fortiguard.fortinet.com/psirt/FG-IR-25-528 - Vendor Advisory

10 Feb 2026, 16:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-02-10 16:16

Updated : 2026-06-17 10:18

NVD link : CVE-2026-21743

Mitre link : CVE-2026-21743

CVE.ORG link : CVE-2026-21743

JSON object : View

Products Affected

fortinet

fortiauthenticator

CWE

CWE-862

Missing Authorization

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