CVE-2025-55018

MEDIUM EPSS 27.0%

Published Feb 10, 20264mo ago · Modified Jun 17, 20261w ago

5.8 CVSS 3.1

Medium

Published Feb 10, 2026 4mo ago

Last Modified Jun 17, 2026 1w ago

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 Details

Base Score

5.8

Exploitability

3.9

Impact

1.4

Vector string

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction None

Scope Changed

Confidentiality None

Integrity Low

Availability None

Threat Intelligence

EPSS Exploit Probability

27.0% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-444

Affected Products 3

Vendor	Product	Version	Range
fortinet	fortios	*	≥6.4.3 – ≤6.4.16
fortinet	fortios	*	≥7.0.0 – <7.4.10
fortinet	fortios	7.6.0	any

References 2

cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-975644.html
fortiguard.fortinet.com https://fortiguard.fortinet.com/psirt/FG-IR-25-667

Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.