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CVE-2026-44277

Fortinet Fortiauthenticator broken access control

9.8 CRITICALEPSS 0.48%
  1. Published12 May 2026

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Fortinet Fortiauthenticator≥ 6.4.0 ≤ 6.4.10 · ≥ 6.5.0 < 6.5.7 · ≥ 6.6.0 < 6.6.9 · ≥ 8.0.0 < 8.0.3

Remediation

Fixed in
Fortinet Fortiauthenticator≥ 6.5.7

References

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Frequently asked

Is CVE-2026-44277 being actively exploited?

CVE-2026-44277 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.48%.

How severe is CVE-2026-44277?

CVE-2026-44277 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.48% probability of exploitation.

Which products are affected by CVE-2026-44277?

Affected products include Fortinet Fortiauthenticator.

How do I fix CVE-2026-44277?

Upgrade affected software to a fixed version, for example Fortinet Fortiauthenticator 6.5.7 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-44277 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.