CVE-2025-55018

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Summary

CVECVE-2025-55018
StatePUBLISHED
Assignerfortinet
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-02-10 16:16:08 UTC
Updated2026-05-12 13:17:22 UTC
DescriptionAn 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

Risk And Classification

Primary CVSS: v3.1 5.8 MEDIUM from [email protected]

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

EPSS: 0.000800000 probability, percentile 0.234650000 (date 2026-05-12)

Problem Types: CWE-444 | CWE-444 Execute unauthorized code or commands

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.8MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
3.1CNACVSS5.2MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N/E:P/RL:O/RC:C

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
Low
Availability
None

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Fortinet Fortios All All All All
Operating System Fortinet Fortios 7.6.0 All All All
Operating System Fortinet Fortios All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Fortinet FortiOS affected 7.6.0 Not specified
CNA Fortinet FortiOS affected 7.4.0 7.4.9 semver Not specified
CNA Fortinet FortiOS affected 7.2.0 7.2.13 semver Not specified
CNA Fortinet FortiOS affected 7.0.0 7.0.19 semver Not specified
CNA Fortinet FortiOS affected 6.4.3 6.4.16 semver Not specified
ADP Siemens RUGGEDCOM APE1808 affected * custom Not specified

References

ReferenceSourceLinkTags
fortiguard.fortinet.com/psirt/FG-IR-25-667 [email protected] fortiguard.fortinet.com Vendor Advisory
cert-portal.siemens.com/productcert/html/ssa-975644.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

Solutions

CNA: Upgrade to FortiOS version 7.6.1 or above Upgrade to FortiOS version 7.4.10 or above

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