CVE-2026-71407

A Stack-based Buffer Overflow vulnerability [CWE-121] vulnerability in Fortinet FortiOS 7.6.1 through 7.6.6 may allow an unauthenticated attacker who can bypass stack protection and ASLR to execute arbitrary code or commands in the context of the WAD daemon via crafted sockets, only if the explicit proxy is configured with Kerberos authentication and SOCKS enabled.

CVSS v3 5.6 MEDIUM

5.6^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://fortiguard.fortinet.com/psirt/FG-IR-26-161	Vendor Advisory
https://cert-portal.siemens.com/productcert/html/ssa-127084.html

Configurations

Configuration 1 (hide)

cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*

History

23 Oct 2026, 20:10

Type	Values Removed	Values Added
Summary		(es) Una vulnerabilidad de desbordamiento de búfer basado en pila [CWE-121] en Fortinet FortiOS 7.6.1 hasta 7.6.6 puede permitir a un atacante no autenticado que puede eludir la protección de pila y ASLR ejecutar código o comandos arbitrarios en el contexto del demonio WAD a través de sockets manipulados, solo si el proxy explícito está configurado con autenticación Kerberos y SOCKS habilitado.

15 Oct 2026, 02:20

Type	Values Removed	Values Added
References		() https://cert-portal.siemens.com/productcert/html/ssa-127084.html -

Information

Published : 2026-08-12 13:17

Updated : 2026-10-24 15:10

NVD link : CVE-2026-71407

Mitre link : CVE-2026-71407

CVE.ORG link : CVE-2026-71407

JSON object : View

Products Affected

fortinet

fortios

CWE

CWE-121

Stack-based Buffer Overflow

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authentication and SOCKS enabled."}, {"lang": "es", "value": "Una vulnerabilidad de desbordamiento de b\u00fafer basado en pila [CWE-121] en Fortinet FortiOS 7.6.1 hasta 7.6.6 puede permitir a un atacante no autenticado que puede eludir la protecci\u00f3n de pila y ASLR ejecutar c\u00f3digo o comandos arbitrarios en el contexto del demonio WAD a trav\u00e9s de sockets manipulados, solo si el proxy expl\u00edcito est\u00e1 configurado con autenticaci\u00f3n Kerberos y SOCKS habilitado."}], "lastModified": "2026-10-24T15:10:00.190", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "ECC5A3E0-228C-4207-86F1-42C51201EFA3", "versionEndExcluding": "7.6.7", "versionStartIncluding": "7.6.1"}], "operator": "OR"}]}], "sourceIdentifier": "psirt@fortinet.com"}