CVE-2025-48840
Authentication Bypass in Fortinet FortiWeb via Hostname Spoofing
Publication date: 2026-03-10
Last updated on: 2026-03-12
Assigner: Fortinet, Inc.
Description
Description
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| fortinet | fortiweb | From 7.6.0 (inc) to 7.6.4 (exc) |
| fortinet | fortiweb | From 7.0.0 (inc) to 7.4.9 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-290 | This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is an authentication bypass by spoofing in Fortinet FortiWeb versions 7.0 through 7.6.3. It allows a remote unauthenticated attacker to bypass hostname restrictions by sending a specially crafted request.
How can this vulnerability impact me? :
An attacker exploiting this vulnerability can bypass hostname restrictions without authentication, potentially allowing unauthorized access or actions that should be restricted based on hostname. This could lead to limited integrity impacts but no direct confidentiality or availability impacts according to the CVSS score.
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