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Vulnerability record · CVE-2021-43068 · published 9 December 2021

CVE-2021-43068: Fortinet fortiauthenticator improper authentication vulnerability

Fortinet · Fortiauthenticator

A improper authentication in Fortinet FortiAuthenticator version 6.4.0 allows user to bypass the second factor of authentication via a RADIUS login portal.

8.1 CVSS 3.1 High EPSS 0.57% · top 55.3% CWE-287 · Improper authentication
8.1CVSS 3.1 base score, v2 5.5
0.57%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

A improper authentication in Fortinet FortiAuthenticator version 6.4.0 allows user to bypass the second factor of authentication via a RADIUS login portal.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://fortiguard.com/advisory/FG-IR-21-212 PatchVendor Advisory
https://fortiguard.com/advisory/FG-IR-21-212 PatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2026-44277Fortinet fortiauthenticator improper access control vulnerabilityA improper access control vulnerability in Fortinet FortiAuthenticator 8.0.2, FortiAuthenticator 8.0.0, FortiAuthenticator 6.6.0 through 6.6.8, Forti…EPSS 0.48%9.0CVE-2013-6990Fortinet fortiauthenticator permissions and access controls vulnerabilityFortiGuard FortiAuthenticator before 3.0 allows remote administrators to gain privileges via the command line interface.EPSS 1.1%8.8CVE-2021-26116Fortinet fortiauthenticator os command injection vulnerabilityAn improper neutralization of special elements used in an OS command vulnerability in the command line interpreter of FortiAuthenticator before 6.3.1…EPSS 0.62%7.5CVE-2025-53379Fortinet fortiauthenticator out-of-bounds read vulnerabilityA out-of-bounds read vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.2, FortiAuthenticator 6.5 all versions may allow a remote unauthe…EPSS 0.53%7.5CVE-2021-22124Fortinet fortiauthenticator uncontrolled resource consumption vulnerabilityAn uncontrolled resource consumption (denial of service) vulnerability in the login modules of FortiSandbox 3.2.0 through 3.2.2, 3.1.0 through 3.1.4,…EPSS 1.0%7.5CVE-2021-24005Fortinet fortiauthenticator hard-coded credentials vulnerabilityUsage of hard-coded cryptographic keys to encrypt configuration files and debug logs in FortiAuthenticator versions before 6.3.0 may allow an attacke…EPSS 0.56%7.5CVE-2015-1455Fortinet fortiauthenticator vulnerabilityFortinet FortiAuthenticator 3.0.0 has a password of (1) slony for the slony PostgreSQL user and (2) www-data for the www-data PostgreSQL user, which …EPSS 2.7%7.2CVE-2026-21743Fortinet fortiauthenticator missing authorization vulnerabilityA missing authorization vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.6, FortiAuthenticator 6.5 all versions, FortiAuthenticator 6.4…EPSS 0.35%

Source: NIST National Vulnerability Database (record CVE-2021-43068), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.