CVE-2026-44277

⛔ critical

Summary

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 Score

9.8

Critical

EPSS Score

0.1

Exploit Probability

Published Date

2026-05-12

First Seen: 2026-05-17

📊 Relative Risk Intelligence

This CVE is Very High Risk - more severe than 90.5% of all 327,306 vulnerabilities in our database.

#31,113

Top 10% most severe

Severity Percentile

🎯 CISA SSVC Assessment Updated: May 12, 2026

🔍 Exploitation Status

None

No known exploits

⚙️ Automatable

YES

Can be exploited automatically

💥 Technical Impact

Total

Complete system compromise possible

SSVC data provided by CISA

Last Modified 2026-05-28

Source NVD 🔗

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

CWE IDs (Weakness Types)

CWE-284

📦 Affected Products 4

Vendor	Product	Status	Affected Versions
fortinet	fortiauthenticator	Affected	> 6.4.0 < 6.4.10
fortinet	fortiauthenticator	Affected	> 6.5.0 < 6.5.7
fortinet	fortiauthenticator	Affected	> 6.6.0 < 6.6.9
fortinet	fortiauthenticator	Affected	> 8.0.0 < 8.0.3

🔗 References 1

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

Vendor Advisory

🔗 Related CVEs 6

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-21743	⚠️ high	7.2	0.0	A missing authorization vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.6, FortiAuthenticator 6.5 all ver...	2026-02-10
CVE-2025-57823	ℹ️ low	2.7	0.0	A direct request ('forced browsing') vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.6, FortiAuthenticato...	2025-12-09
CVE-2025-59923	ℹ️ low	2.7	0.0	An improper access control vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.6, FortiAuthenticator 6.5 all ...	2025-12-09
CVE-2022-23439	🔶 medium	4.7	0.1	A externally controlled reference to a resource in another sphere vulnerability in Fortinet allows attacker to poison w...	2025-01-22
CVE-2024-23664	🔶 medium	6.1	0.3	A URL redirection to untrusted site ('open redirect') in Fortinet FortiAuthenticator version 6.6.0, version 6.5.3 and be...	2024-06-03
CVE-2022-22302	🔶 medium	5.3	0.1	A clear text storage of sensitive information (CWE-312) vulnerability in both FortiGate version 6.4.0 through 6.4.1, 6.2...	2023-07-11

These CVEs affect the same products