How severe is CVE-2021-43068?

CVE-2021-43068 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-43068 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-43068?

CVE-2021-43068 affects Fortinet Fortiauthenticator. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-43068?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-43068 published?

CVE-2021-43068 was published on 2021-12-09 and last updated on 2026-06-17.

CVE-2021-43068

CVE-2021-43068 is a medium-severity vulnerability in Fortinet Fortiauthenticator with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 5.5
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Fortinet Fortiauthenticator
Published: 2021-12-09
Last modified: 2026-06-17

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.

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 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-43068 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-43068?: CVE-2021-43068 affects Fortinet Fortiauthenticator. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-43068?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-43068 published?: CVE-2021-43068 was published on 2021-12-09 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:fortinet:fortiauthenticator:6.4.0:*:*:*:*:*:*:*

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