---
title: "CVE-2026-107656: Fortinet FortiSandbox - Authentication Bypass"
description: "Fortinet FortiSandbox 4.2 all versions, 4.4.0 through 4.4.9, 5.0.0 through 5.0.6, and FortiSandbox PaaS versions contain an authentication bypass caused by alternate path or channel, letting attackers execute unauthorized code or commands via crafted HTTP requests, exploit requires network access."
url: https://panop.io/threat-heartbeat/CVE-2026-107656/
---

# CVE-2026-107656 Fortinet FortiSandbox - Authentication Bypass

Fortinet FortiSandbox 4.2 all versions, 4.4.0 through 4.4.9, 5.0.0 through 5.0.6, and FortiSandbox PaaS versions contain an authentication bypass caused by alternate path or channel, letting attackers execute unauthorized code or commands via crafted HTTP requests, exploit requires network access.

CVSS base score 9.8 /10

Critical

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-107656)

## Details

Type

Authentication Bypass

Impact

Remote Code Execution

CVSS vector

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

Published

26 October 2026

Updated

27 October 2026

Weakness

[CWE-288](https://cwe.mitre.org/data/definitions/288.html)

## Vendor fix

Update to the latest available version of FortiSandbox.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-107656](https://nvd.nist.gov/vuln/detail/CVE-2026-107656)
- [https://fortiguard.fortinet.com/psirt/FG-IR-26-185](https://fortiguard.fortinet.com/psirt/FG-IR-26-185)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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