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Medium · 5.2 CVE-2025-55018 EUVD-2025-207443GHSA-7hxv-xg9w-4xg7

An inconsistent interpretation of http requests ('http request smuggling') vulnerability in Fortinet FortiOS 7.6.0, FortiOS 7.4.0 through 7…

Published Feb 10, 2026 · Updated May 12, 2026 · Assigned by fortinet

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 products

VendorProductAffectedFixed
Fortinet FortiOS 7.6.0, 7.4.0 – ≤ 7.4.9, 7.2.0 – ≤ 7.2.13, 7.0.0 – ≤ 7.0.19, 6.4.3 – ≤ 6.4.16 —

Advisories 4

References