CVE-2021-43068

Name: CVE-2021-43068
Creator: NVD / NIST
Published: 2021-12-09T10:15:11.897+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 0.56%

Last modified Jun 17, 2026

CVE-2021-43068 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. A improper authentication in Fortinet FortiAuthenticator version 6.4.0 allows user to bypass the second factor of authentication via a RADIUS login portal.. EPSS estimates a 0.56% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.1/10

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

EPSS Probability

0.56%

42.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-287

Affected Software

Vendor	Product	Versions
Fortinet	Fortiauthenticator	6.4.0

References

https://fortiguard.com/advisory/FG-IR-21-212Patch, Vendor Advisory
https://fortiguard.com/advisory/FG-IR-21-212Patch, Vendor Advisory

Timeline

Published: Dec 9, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-43068?

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

How severe is CVE-2021-43068?

CVE-2021-43068 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 0.56% probability of exploitation in the next 30 days.

How do I fix CVE-2021-43068?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-43068?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST