How severe is CVE-2026-44277?

CVE-2026-44277 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-44277 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-44277?

CVE-2026-44277 affects Fortinet Fortiauthenticator. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-44277?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-44277 have an EU (EUVD) identifier?

Yes. CVE-2026-44277 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-29729.

When was CVE-2026-44277 published?

CVE-2026-44277 was published on 2026-05-12 and last updated on 2026-06-17.

CVE-2026-44277

CVE-2026-44277 is a critical-severity vulnerability in Fortinet Fortiauthenticator with a CVSS 3.x base score of 9.8. 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-284.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-29729
Weakness: CWE-284
Affected product: Fortinet Fortiauthenticator
Published: 2026-05-12
Last modified: 2026-06-17

Description

A improper access control vulnerability in Fortinet FortiAuthenticator 8.0.2, FortiAuthenticator 8.0.0, FortiAuthenticator 6.6.0 through 6.6.8, FortiAuthenticator 6.5.0 through 6.5.6 may allow attacker to execute unauthorized code or commands via crafted requests.

Frequently asked questions

What is CVE-2026-44277?: A improper access control vulnerability in Fortinet FortiAuthenticator 8.0.2, FortiAuthenticator 8.0.0, FortiAuthenticator 6.6.0 through 6.6.8, FortiAuthenticator 6.5.0 through 6.5.6 may allow attacker to execute unauthorized code or commands via crafted requests.
How severe is CVE-2026-44277?: CVE-2026-44277 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-44277 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-44277?: CVE-2026-44277 affects Fortinet Fortiauthenticator. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-44277?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-44277 have an EU (EUVD) identifier?: Yes. CVE-2026-44277 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-29729.
When was CVE-2026-44277 published?: CVE-2026-44277 was published on 2026-05-12 and last updated on 2026-06-17.

References

https://fortiguard.fortinet.com/psirt/FG-IR-26-128

Affected products (1)

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

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