A out-of-bounds read vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.2, FortiAuthenticator 6.5 all versions may allow a remote unauthenticated attacker to retrieve sensitive information via a specially crafted request.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00385.

Exploitation none

Automatable yes

Technical Impact partial

Affected Vendors & Products

Vendors Products
Fortinet Subscribe
Fortiauthenticator Subscribe

Configuration 1 [-]

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

No data.

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Vendors Products
Fortinet Subscribe
Fortiauthenticator Subscribe
Advisories

No advisories yet.

Fixes

Solution

Upgrade to FortiAuthenticator version 6.6.3 or above

Workaround

No workaround given by the vendor.

References
Link Providers
https://fortiguard.fortinet.com/psirt/FG-IR-26-146 cve-icon cve-icon
History

Fri, 31 Jul 2026 10:30:00 +0000

Type Values Removed Values Added
Title Out‑of‑Bounds Read Enabling Remote Data Exposure in FortiAuthenticator

Wed, 29 Jul 2026 06:15:00 +0000

Type Values Removed Values Added
Title Out-of-Bounds Read in FortiAuthenticator Allows Sensitive Data Disclosure

Thu, 23 Jul 2026 03:00:00 +0000

Type Values Removed Values Added
Title Out-of-Bounds Read in FortiAuthenticator Allows Sensitive Data Disclosure

Fri, 17 Jul 2026 22:15:00 +0000

Type Values Removed Values Added
Title Out‑of‑Bounds Read Leads to Remote Data Exposure in FortiAuthenticator

Thu, 16 Jul 2026 15:30:00 +0000

Type Values Removed Values Added
Title Out‑of‑Bounds Read Leads to Remote Data Exposure in FortiAuthenticator

Tue, 14 Jul 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 14 Jul 2026 15:45:00 +0000

Type Values Removed Values Added
Description A out-of-bounds read vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.2, FortiAuthenticator 6.5 all versions may allow a remote unauthenticated attacker to retrieve sensitive information via a specially crafted request.
First Time appeared Fortinet
Fortinet fortiauthenticator
Weaknesses CWE-125
CPEs cpe:2.3:a:fortinet:fortiauthenticator:6.3.0:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiauthenticator:6.3.1:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiauthenticator:6.3.2:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiauthenticator:6.3.3:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiauthenticator:6.3.4:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiauthenticator:6.3.5:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiauthenticator:6.4.0:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiauthenticator:6.4.10:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiauthenticator:6.4.11:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiauthenticator:6.4.1:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiauthenticator:6.4.2:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiauthenticator:6.4.3:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiauthenticator:6.4.4:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiauthenticator:6.4.5:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiauthenticator:6.4.6:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiauthenticator:6.4.7:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiauthenticator:6.4.8:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiauthenticator:6.4.9:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiauthenticator:6.5.0:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiauthenticator:6.5.1:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiauthenticator:6.5.2:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiauthenticator:6.5.3:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiauthenticator:6.5.4:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiauthenticator:6.5.5:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiauthenticator:6.5.6:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiauthenticator:6.5.7:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiauthenticator:6.6.0:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiauthenticator:6.6.1:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiauthenticator:6.6.2:*:*:*:*:*:*:*
Vendors & Products Fortinet
Fortinet fortiauthenticator
References
Metrics cvssV3_1

{'score': 7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:F/RL:O/RC:C'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: fortinet

Published:

Updated: 2026-07-22T13:57:33.288Z

Reserved: 2025-06-27T15:44:12.816Z

Link: CVE-2025-53379

cve-icon Vulnrichment

Updated: 2026-07-14T15:56:02.315Z

cve-icon NVD

Status : Analyzed

Published: 2026-07-14T16:16:42.477

Modified: 2026-07-15T18:30:56.310

Link: CVE-2025-53379

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-31T10:15:06Z

Weaknesses