Authorization Flaw in Fortinet FortiAuthenticator Software
CVE-2026-126250

8.2HIGH

Key Information:

Vendor

Fortinet
Status
Fortiauthenticator
Vendor
CVE Published:
11 November 2026

What is CVE-2026-126250?

An authorization vulnerability in Fortinet FortiAuthenticator versions 8.0.0 to 8.0.3 and 6.6.0 to 6.6.10 allows unauthenticated attackers to exploit the flaw through specially crafted HTTP requests, potentially leading to a denial of service. This issue highlights critical security concerns for organizations using these versions, emphasizing the need for prompt updates and security mitigations.

Affected Version(s)

FortiAuthenticator 8.0.0 <= 8.0.3

FortiAuthenticator 6.6.0 <= 6.6.10

References

https://fortiguard.fortinet.com/psirt/FG-IR-26-264

CVSS V3.1

Score:
8.2
Severity:
HIGH
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.