# Fortinet FortiAuthenticator vulnerabilities

Source: https://junglewise.ai/threats/technologies/fortiauthenticator  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 12 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/fortiauthenticator.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 22 vulnerabilities in Fortinet FortiAuthenticator: 18 in the last 7 days and 18 in the last 90 days, 3 of them critical and 0 exploited in the wild. The most recent, CVE-2026-126257, was published on 11 November 2026. Nothing was published in the last eight weeks.

## Counts

- Last 7 days: 18
- Last 30 days: 18
- Last 90 days: 18
- All time: 22 (3 critical, 0 exploited in the wild)

## About Fortinet FortiAuthenticator

Multi-factor authentication server providing identity management and access control for Fortinet environments.

## Latest Fortinet FortiAuthenticator vulnerabilities

- [CVE-2026-126257: Fortinet FortiAuthenticator hard-coded password authentication bypass](https://junglewise.ai/threats/cve-2026-126257-a-use-of-hard-coded-password-vulnerability-in-fortinet) (critical, CVSS 9, published 11 Nov 2026)
- [CVE-2026-126252: Fortinet FortiAuthenticator SQL injection](https://junglewise.ai/threats/cve-2026-126252-a-improper-neutralization-of-special-elements-used-in-an-sql) (high, CVSS 8.3, published 11 Nov 2026)
- [CVE-2026-126251: Fortinet FortiAuthenticator incorrect authorization](https://junglewise.ai/threats/cve-2026-126251-a-incorrect-authorization-vulnerability-in-fortinet) (critical, CVSS 9.1, published 11 Nov 2026)
- [CVE-2026-126250: Fortinet FortiAuthenticator authorization bypass DoS](https://junglewise.ai/threats/cve-2026-126250-a-incorrect-authorization-vulnerability-in-fortinet) (high, CVSS 8.2, published 11 Nov 2026)
- [CVE-2026-126249: Fortinet FortiAuthenticator privilege escalation in GUI](https://junglewise.ai/threats/cve-2026-126249-a-improper-privilege-management-vulnerability-in-fortinet) (high, CVSS 7.2, published 11 Nov 2026)
- [CVE-2026-126248: Fortinet FortiAuthenticator insufficiently protected credentials](https://junglewise.ai/threats/cve-2026-126248-a-insufficiently-protected-credentials-vulnerability-in-fortinet) (high, CVSS 7.5, published 11 Nov 2026)
- [CVE-2026-126247: Fortinet FortiAuthenticator format string code execution](https://junglewise.ai/threats/cve-2026-126247-a-use-of-externally-controlled-format-string-vulnerability-in) (high, CVSS 7.2, published 11 Nov 2026)
- [CVE-2026-126246: Fortinet FortiAuthenticator null pointer dereference](https://junglewise.ai/threats/cve-2026-126246-a-null-pointer-dereference-vulnerability-in-fortinet) (high, CVSS 7.5, published 11 Nov 2026)
- [CVE-2026-126245: Fortinet FortiAuthenticator out-of-bounds write in API](https://junglewise.ai/threats/cve-2026-126245-a-out-of-bounds-write-vulnerability-in-fortinet) (high, CVSS 8.1, published 11 Nov 2026)
- [CVE-2026-126244: Fortinet FortiAuthenticator resource exhaustion denial of service](https://junglewise.ai/threats/cve-2026-126244-a-allocation-of-resources-without-limits-or-throttling) (high, CVSS 7.5, published 11 Nov 2026)
- [CVE-2026-126243: Fortinet FortiAuthenticator incorrect authorization](https://junglewise.ai/threats/cve-2026-126243-a-incorrect-authorization-vulnerability-in-fortinet) (high, CVSS 7.2, published 11 Nov 2026)
- [CVE-2026-126242: Fortinet FortiAuthenticator incorrect authorization in API](https://junglewise.ai/threats/cve-2026-126242-a-incorrect-authorization-vulnerability-in-fortinet) (high, CVSS 7.4, published 11 Nov 2026)
- [CVE-2026-126241: Fortinet FortiAuthenticator SQL injection in API](https://junglewise.ai/threats/cve-2026-126241-a-improper-neutralization-of-special-elements-used-in-an-sql) (high, CVSS 8.8, published 11 Nov 2026)
- [CVE-2026-126240: Fortinet FortiAuthenticator LDAP injection authentication bypass](https://junglewise.ai/threats/cve-2026-126240-a-improper-neutralization-of-special-elements-used-in-an-ldap) (high, CVSS 8.2, published 11 Nov 2026)
- [CVE-2026-126239: Fortinet FortiAuthenticator stack-based buffer overflow](https://junglewise.ai/threats/cve-2026-126239-a-stack-based-buffer-overflow-vulnerability-in-fortinet) (high, CVSS 7.5, published 11 Nov 2026)
- [CVE-2026-126238: Fortinet FortiAuthenticator incorrect authorization in REST API](https://junglewise.ai/threats/cve-2026-126238-a-incorrect-authorization-vulnerability-in-fortinet) (high, CVSS 8.6, published 11 Nov 2026)
- [CVE-2026-126237: Fortinet FortiAuthenticator infinite loop denial of service](https://junglewise.ai/threats/cve-2026-126237-a-loop-with-unreachable-exit-condition-infinite-loop) (high, CVSS 7.5, published 11 Nov 2026)
- [CVE-2026-121526: Fortinet FortiAuthenticator open redirect vulnerability](https://junglewise.ai/threats/cve-2026-121526-a-url-redirection-to-untrusted-site-open-redirect-vulnerability) (medium, CVSS 6.1, published 11 Nov 2026)
- [CVE-2025-53379: Fortinet FortiAuthenticator out-of-bounds read in GUI](https://junglewise.ai/threats/cve-2025-53379-fortinet-fortiauthenticator-out-of-bounds-read-in-gui) (high, CVSS 7.5, published 14 Jul 2026)
- [CVE-2026-44277: Fortinet FortiAuthenticator improper access control in API](https://junglewise.ai/threats/cve-2026-44277-fortinet-fortiauthenticator-improper-access-control-in-api) (critical, CVSS 9.8, published 12 May 2026)
- [CVE-2025-59923: An improper access control vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.6, FortiAuthenticator 6.5…](https://junglewise.ai/threats/cve-2025-59923-an-improper-access-control-vulnerability-in-fortinet) (low, CVSS 2.7, published 9 Dec 2025)
- [CVE-2025-57823: A direct request ('forced browsing') vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.6…](https://junglewise.ai/threats/cve-2025-57823-a-direct-request-forced-browsing-vulnerability-in-fortinet) (low, CVSS 2.7, published 9 Dec 2025)

## Most severe Fortinet FortiAuthenticator vulnerabilities

- [CVE-2026-44277: Fortinet FortiAuthenticator improper access control in API](https://junglewise.ai/threats/cve-2026-44277-fortinet-fortiauthenticator-improper-access-control-in-api) (critical, CVSS 9.8, published 12 May 2026)
- [CVE-2026-126251: Fortinet FortiAuthenticator incorrect authorization](https://junglewise.ai/threats/cve-2026-126251-a-incorrect-authorization-vulnerability-in-fortinet) (critical, CVSS 9.1, published 11 Nov 2026)
- [CVE-2026-126257: Fortinet FortiAuthenticator hard-coded password authentication bypass](https://junglewise.ai/threats/cve-2026-126257-a-use-of-hard-coded-password-vulnerability-in-fortinet) (critical, CVSS 9, published 11 Nov 2026)
- [CVE-2026-126241: Fortinet FortiAuthenticator SQL injection in API](https://junglewise.ai/threats/cve-2026-126241-a-improper-neutralization-of-special-elements-used-in-an-sql) (high, CVSS 8.8, published 11 Nov 2026)
- [CVE-2026-126238: Fortinet FortiAuthenticator incorrect authorization in REST API](https://junglewise.ai/threats/cve-2026-126238-a-incorrect-authorization-vulnerability-in-fortinet) (high, CVSS 8.6, published 11 Nov 2026)
- [CVE-2026-126252: Fortinet FortiAuthenticator SQL injection](https://junglewise.ai/threats/cve-2026-126252-a-improper-neutralization-of-special-elements-used-in-an-sql) (high, CVSS 8.3, published 11 Nov 2026)
- [CVE-2026-126250: Fortinet FortiAuthenticator authorization bypass DoS](https://junglewise.ai/threats/cve-2026-126250-a-incorrect-authorization-vulnerability-in-fortinet) (high, CVSS 8.2, published 11 Nov 2026)
- [CVE-2026-126240: Fortinet FortiAuthenticator LDAP injection authentication bypass](https://junglewise.ai/threats/cve-2026-126240-a-improper-neutralization-of-special-elements-used-in-an-ldap) (high, CVSS 8.2, published 11 Nov 2026)
- [CVE-2026-126245: Fortinet FortiAuthenticator out-of-bounds write in API](https://junglewise.ai/threats/cve-2026-126245-a-out-of-bounds-write-vulnerability-in-fortinet) (high, CVSS 8.1, published 11 Nov 2026)
- [CVE-2026-126248: Fortinet FortiAuthenticator insufficiently protected credentials](https://junglewise.ai/threats/cve-2026-126248-a-insufficiently-protected-credentials-vulnerability-in-fortinet) (high, CVSS 7.5, published 11 Nov 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 18 | 2 | 0 |

## Other Fortinet technologies

- [Fortinet FortiOS](https://junglewise.ai/threats/technologies/fortios): 66 vulnerabilities
- [Fortinet FortiManager](https://junglewise.ai/threats/technologies/fortimanager): 54 vulnerabilities
- [Fortinet FortiManager Cloud](https://junglewise.ai/threats/technologies/fortimanager-cloud): 48 vulnerabilities
- [Fortinet FortiAnalyzer](https://junglewise.ai/threats/technologies/fortianalyzer): 47 vulnerabilities
- [Fortinet Fortianalyzer Cloud](https://junglewise.ai/threats/technologies/fortianalyzer-cloud): 42 vulnerabilities
- [Fortinet FortiProxy](https://junglewise.ai/threats/technologies/fortiproxy): 35 vulnerabilities
- [Fortinet FortiMail](https://junglewise.ai/threats/technologies/fortimail): 31 vulnerabilities
- [Fortinet FortiSandbox](https://junglewise.ai/threats/technologies/fortisandbox): 17 vulnerabilities
- [Fortinet FortiWeb](https://junglewise.ai/threats/technologies/fortiweb): 16 vulnerabilities
- [Fortinet Fortisase](https://junglewise.ai/threats/technologies/fortisase): 13 vulnerabilities
- [Fortinet FortiPAM](https://junglewise.ai/threats/technologies/fortipam): 12 vulnerabilities
- [Fortinet FortiSandbox Cloud](https://junglewise.ai/threats/technologies/fortisandbox-cloud): 12 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Fortinet FortiAuthenticator vulnerabilities", https://junglewise.ai/threats/technologies/fortiauthenticator, 12 November 2026.