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Fortinet PSIRT AdvisoriesFG-IR-26-161

Stack buffer overflow in WAD

CVSSv3 Score: 5.1 A Stack-based Buffer Overflow vulnerability [CWE-121] in FortiOS explicit proxy 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. Revised on 2026-08-12 00:00:00

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5.1CVSS out of 10Medium severity
Scope

What the vendor says is affected

  • FortiOS
Timeline

When this advisory changed

  1. Published by Fortinet

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

  3. Confirmed at the source

    Our collector saw this advisory during a later source check.

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UI DoS attack

FG-IR-26-162