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CVE-2026-126242

A incorrect authorization vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAuthenticator 6.6.0 through 6.6.10 may allow an attacker to bypass authentication and gain unauthorized access. Full impersonation however requires the attacker to obtain pre-required id and data via other means.

CVSS 3.1 · 7.4 High EPSS < 1% KEV · Not listed
Vendors
CVE-2026-126240

A improper neutralization of special elements used in an ldap query ('ldap injection') vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAuthenticator 6.6.0 through 6.6.10 may allow an authenticated attacker to bypass authentication. Successful exploitation requires either a malicious/compromised upstream IdP, or an IdP configuration that allows the user to control the NameID (or the SAML attribute used as the username).

CVSS 3.1 · 8.2 High EPSS < 1% KEV · Not listed
Vendors
CVE-2026-126239

A stack-based buffer overflow vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAuthenticator 6.6.0 through 6.6.10 may allow an unauthenticated attacker to crash the FSSO subsystem via crafted http requests

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
CVE-2026-126241

A improper neutralization of special elements used in an sql command ('sql injection') vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAuthenticator 6.6.0 through 6.6.10 may allow an authenticated attacker to execute unauthorized SQL commands on the underlying database.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
CVE-2026-126244

A allocation of resources without limits or throttling vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAuthenticator 6.6.0 through 6.6.10 may allow an unauthenticated attacker to exhaust system resources, potentially resulting in a denial of service (DoS).

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
CVE-2026-126247

A use of externally-controlled format string vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAuthenticator 6.6.0 through 6.6.10 may allow an authenticated privileged attacker to execute unauthorized code or commands via http requests.

CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed
Vendors
CVE-2026-126249

A improper privilege management vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAuthenticator 6.6.0 through 6.6.10 may allow an authenticated attacker to escalate privileges.

CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed
Vendors
CVE-2026-126248

A insufficiently protected credentials vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAuthenticator 6.6.0 through 6.6.10 may allow an unauthenticated attacker to obtain sensitive information via HTTPS requests.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
CVE-2026-126250

A incorrect authorization vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAuthenticator 6.6.0 through 6.6.10 may allow an unauthenticated attacker to cause a denial of service via HTTP requests.

CVSS 3.1 · 8.2 High EPSS < 1% KEV · Not listed
Vendors
CVE-2026-126251

A incorrect authorization vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAuthenticator 6.6.0 through 6.6.10 may allow an attacker to bypass authentication and gain unauthorized access.

CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed
Vendors
CVE-2026-126257

Hard‑Coded Password Enables Unauthenticated Authorization Bypass on FortiAuthenticator

A use of hard-coded password vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAuthenticator 6.6.0 through 6.6.10 may allow an unauthenticated attacker to bypass credential validation in certain circumstances outside of the attacker's control and gain unauthorized access.

CVSS 3.1 · 9 Critical EPSS < 1% KEV · Not listed
Vendors
CVE-2026-126243

A incorrect authorization vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAuthenticator 6.6.0 through 6.6.10 may allow an attacker to bypass authentication and gain unauthorized access. Full impersonation however requires the attacker to obtain pre-required id and data via other means.

CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed
Vendors
CVE-2026-126238

A incorrect authorization vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAuthenticator 6.6.0 through 6.6.10 may allow an unauthenticated attacker to bypass authorization checks and gain unauthorized access to restricted functionality.

CVSS 3.1 · 8.6 High EPSS < 1% KEV · Not listed
Vendors
CVE-2026-126245

A out-of-bounds write vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAuthenticator 6.6.0 through 6.6.10 may allow an unauthenticated attacker to execute unauthorized code or commands via http requests, should the attacker be able to defeat ASLR protections.

CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed
Vendors
CVE-2026-126246

A null pointer dereference vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAuthenticator 6.6.0 through 6.6.10 may allow an unauthenticated attacker to perform a denial of service attack via http requests.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
CVE-2026-126252

A improper neutralization of special elements used in an sql command ('sql injection') vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAuthenticator 6.6.0 through 6.6.10 may allow an authenticated attacker to execute unauthorized code or commands via http requests

CVSS 3.1 · 8.3 High EPSS < 1% KEV · Not listed
Vendors
CVE-2026-121526

A url redirection to untrusted site ('open redirect') vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAuthenticator 6.6.0 through 6.6.10 may allow an unauthenticated attacker to perform an open redirect attack via crafted HTTP requests.

CVSS 3.1 · 5.8 Medium EPSS < 1% KEV · Not listed
Vendors
CVE-2026-126237

Denial of Service via Infinite Loop in FortiAuthenticator

A loop with unreachable exit condition ('infinite loop') vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAuthenticator 6.6.0 through 6.6.10 may allow an attacker to cause a denial of service via crafted TCP requests.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
CVE-2026-44277

Improper Access Control Enabling Remote Code Execution in FortiAuthenticator

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, FortiAuthenticator 6.4.0 through 6.4.10 may allow attacker to execute unauthorized code or commands via crafted requests.

CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed
Vendors
CVE-2025-53379

Out‑of‑Bounds Read Enabling Remote Data Exposure in FortiAuthenticator

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.

CVSS 3.1 · 7 High EPSS < 1% KEV · Not listed
Vendors