CVE-2026-71407

Medium

Description

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.

SeverityMedium

CVSS5.6

Exploit probability—

Product

Fortinet Fortios

PublishedAug 12, 2026

First seenAug 12, 2026

Weakness typeCWE-121CWE-121

How to fix

Update

fortinet fortios7.6.7 or later

Vendor advisories

fortiguard.fortinet.com/psirt/FG-IR-26-161

Affected products

Product	Affected versions	Fixed in
fortinet fortios	7.6.1 ≤ v < 7.6.7	7.6.7

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