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CVE-2025-55018

nvd nist
Published: Feb 10, 2026Modified: Jun 17, 2026

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5.8
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Exploitability: 3.9 / Impact: 1.4
Source: psirt@fortinet.com (Secondary)

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

Affected (3)

Products: Fortinet: Fortios
Fortinet
1 product
Fortios
Configuration A
3 vulnerable
Vulnerable SoftwareAffected Versions
Fortinet
Fortios
From 6.4.3 to 6.4.16
Fortios
From 7.0.0 to 7.4.10
Fortios
Version 7.6.0

Related CWEs

CWE-444
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
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.

References (2)

Source: psirt@fortinet.com
Vendor Advisory
Source: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e

Timeline

No history available yet.