CVE-2025-55018
Undergoing Analysis
Undergoing Analysis - In Progress
HTTP Request Smuggling in Fortinet FortiOS Allows Unauthorized Access
Publication date: 2026-02-10
Last updated on: 2026-02-23
Assigner: Fortinet, Inc.
Description
Description
An inconsistent interpretation of http requests ('http request smuggling') vulnerability in Fortinet FortiOS 7.6.0, FortiOS 7.4.0 through 7.4.9, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4.3 through 6.4.16 may allow an unauthenticated attacker to smuggle an unlogged http request through the firewall policies via a specially crafted header
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| fortinet | fortios | 7.6.0 |
| fortinet | fortios | From 7.0.0 (inc) to 7.4.10 (exc) |
| fortinet | fortios | From 6.4.3 (inc) to 6.4.16 (inc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-444 | The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination. |
