CVE-2025-62439
Improper Verification Vulnerability in Fortinet FortiOS Enables Unauthorized Access
Publication date: 2026-02-10
Last updated on: 2026-02-10
Assigner: Fortinet, Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| fortinet | fortios | 7.6 |
| fortinet | fortios | 7.4 |
| fortinet | fortios | 7.2 |
| fortinet | fortios | 7.0 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-940 | The product establishes a communication channel to handle an incoming request that has been initiated by an actor, but it does not properly verify that the request is coming from the expected origin. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is an Improper Verification of Source of a Communication Channel (CWE-940) found in Fortinet FortiOS versions 7.6.0 through 7.6.4, 7.4.0 through 7.4.9, 7.2 all versions, and 7.0 all versions.
It allows an authenticated user who knows the Fortinet Single Sign-On (FSSO) policy configurations to gain unauthorized access to protected network resources by sending specially crafted requests.
How can this vulnerability impact me? :
The vulnerability can allow an authenticated user with limited privileges and knowledge of FSSO policy configurations to escalate their access and reach protected network resources without proper authorization.
This unauthorized access can lead to potential exposure or compromise of sensitive data and network assets.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know