CVE-2025-62826

An Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting') vulnerability [CWE-113] vulnerability in Fortinet FortiOS 7.6.0 through 7.6.4, FortiOS 7.4 all versions, FortiOS 7.2 all versions, FortiProxy 7.6.0 through 7.6.4, FortiProxy 7.4 all versions, FortiProxy 7.2 all versions may allow an attacker able to intercept and modify a user's captive portal authentication request to inject arbitrary headers via crafted HTTP requests.

CVSS v3 3.1 LOW

3.1^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.6 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://fortiguard.fortinet.com/psirt/FG-IR-26-153	Vendor Advisory
https://cert-portal.siemens.com/productcert/html/ssa-864900.html

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:fortinet:fortiproxy::::::::
	cpe:2.3:o:fortinet:fortios::::::::

History

29 Sep 2026, 15:10

Type	Values Removed	Values Added
Summary		(es) Una vulnerabilidad de neutralización incorrecta de secuencias CRLF en encabezados HTTP ('División de respuesta HTTP') [CWE-113] vulnerabilidad en Fortinet FortiOS 7.6.0 hasta 7.6.4, FortiOS 7.4 todas las versiones, FortiOS 7.2 todas las versiones, FortiProxy 7.6.0 hasta 7.6.4, FortiProxy 7.4 todas las versiones, FortiProxy 7.2 todas las versiones puede permitir a un atacante capaz de interceptar y modificar la solicitud de autenticación del portal cautivo de un usuario inyectar encabezados arbitrarios a través de solicitudes HTTP manipuladas.

Information

Published : 2026-07-14 16:16

Updated : 2026-09-29 15:10

NVD link : CVE-2025-62826

Mitre link : CVE-2025-62826

CVE.ORG link : CVE-2025-62826

JSON object : View

Products Affected

fortinet

fortiproxy
fortios

CWE

CWE-113

Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')

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APE1808", "versions": [{"status": "affected", "version": "0", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}]}], "published": "2026-07-14T16:16:42.850", "references": [{"url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-153", "tags": ["Vendor Advisory"], "source": "psirt@fortinet.com"}, {"url": "https://cert-portal.siemens.com/productcert/html/ssa-864900.html", "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "psirt@fortinet.com", "description": [{"lang": "en", "value": "CWE-113"}]}], "descriptions": [{"lang": "en", "value": "An Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting') vulnerability [CWE-113] vulnerability in Fortinet FortiOS 7.6.0 through 7.6.4, FortiOS 7.4 all versions, FortiOS 7.2 all versions, FortiProxy 7.6.0 through 7.6.4, FortiProxy 7.4 all versions, FortiProxy 7.2 all versions may allow an attacker able to intercept and modify a user's captive portal authentication request to inject arbitrary headers via crafted HTTP requests."}, {"lang": "es", "value": "Una vulnerabilidad de neutralizaci\u00f3n incorrecta de secuencias CRLF en encabezados HTTP ('Divisi\u00f3n de respuesta HTTP') [CWE-113] vulnerabilidad en Fortinet FortiOS 7.6.0 hasta 7.6.4, FortiOS 7.4 todas las versiones, FortiOS 7.2 todas las versiones, FortiProxy 7.6.0 hasta 7.6.4, FortiProxy 7.4 todas las versiones, FortiProxy 7.2 todas las versiones puede permitir a un atacante capaz de interceptar y modificar la solicitud de autenticaci\u00f3n del portal cautivo de un usuario inyectar encabezados arbitrarios a trav\u00e9s de solicitudes HTTP manipuladas."}], "lastModified": "2026-09-29T15:10:00.193", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C0C2DFB7-AFEB-41CF-B1E2-52F908AFF405", "versionEndExcluding": "7.6.5", "versionStartIncluding": "7.2.0"}, {"criteria": "cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5AAADD9A-703E-4E09-8D23-8DE9A5E5EC56", "versionEndExcluding": "7.6.5", "versionStartIncluding": "7.2.0"}], "operator": "OR"}]}], "sourceIdentifier": "psirt@fortinet.com"}