Improper Access Control Vulnerability in Fortinet FortiAuthenticator
CVE-2025-59923

2.6LOW

Key Information:

Vendor

Fortinet
Status
Fortiauthenticator
Vendor
CVE Published:
9 December 2025

What is CVE-2025-59923?

An improper access control vulnerability has been identified in Fortinet FortiAuthenticator across several versions. This flaw enables an authenticated attacker with read-only admin privileges to exploit crafted requests to gain unauthorized access to the credentials of other administrators' messaging services. If not addressed, this vulnerability poses a significant risk to the security posture of organizations relying on FortiAuthenticator for authentication services.

Affected Version(s)

FortiAuthenticator 6.6.0 <= 6.6.6

FortiAuthenticator 6.5.0 <= 6.5.6

FortiAuthenticator 6.4.0 <= 6.4.10

References

https://fortiguard.fortinet.com/psirt/FG-IR-25-616

CVSS V3.1

Score:
2.6
Severity:
LOW
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2025-59923 : Improper Access Control Vulnerability in Fortinet FortiAuthenticator