CVE-2026-107656

Authentication Bypass via Alternate Channel in Fortinet FortiSandbox Allowing Unauthorized Command Execution

Published Oct 26, 2026 CVSS 3.1 · 9.6 Critical EPSS < 1% KEV · Not listed

Description

An authentication bypass using an alternate path or channel vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.6, FortiSandbox 4.4.0 through 4.4.9, FortiSandbox 4.2 all versions, FortiSandbox PaaS 5.0.0 through 5.0.6, FortiSandbox PaaS 4.4 all versions, FortiSandbox PaaS 4.2 all versions may allow attacker to execute unauthorized code or commands via crafted HTTP requests

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Fortinet

FortiSandbox

unaffected

Version	Status	Constraints
`5.0.0`	affected	≤ 5.0.6
`4.4.0`	affected	≤ 4.4.9
`4.2.1`	affected	≤ 4.2.8

Fortinet

FortiSandbox PaaS

unaffected

Version	Status	Constraints
`5.0.0`	affected	≤ 5.0.6
`4.4.0`	affected	≤ 4.4.9
`4.2.1`	affected	≤ 4.2.8

No data.

Vendor Product Versions

Fortinet

Fortisandbox

Version	Status	Scheme	Platform
`[5.0.0,5.0.6]`	affected	semver	—
`[4.4.0,4.4.9]`	affected	semver	—
`[4.2.1,4.2.8]`	affected	semver	—

Fortinet

Fortisandboxpaas

Version	Status	Scheme	Platform
`[5.0.0,5.0.6]`	affected	semver	—
`[4.4.0,4.4.9]`	affected	semver	—
`[4.2.1,4.2.8]`	affected	semver	—

Remediation

Vendor Solution

Upgrade to FortiSandbox version 5.2.0 or above Upgrade to FortiSandbox version 5.0.7 or above Upgrade to FortiSandbox version 4.4.10 or above Upgrade to FortiSandbox PaaS version 5.0.7 or above

Tracking

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.851% probability within 30 days)

Exploitation none

Automatable yes

Technical Impact total

References

Link	Providers
https://fortiguard.fortinet.com/psirt/FG-IR-26-185

History

Oct 26, 2026 4:30 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Oct 26, 2026 4:15 PM Title updated View changes

Type	Values Removed	Values Added
Title		Authentication Bypass via Alternate Channel in Fortinet FortiSandbox Allowing Unauthorized Command Execution

Oct 26, 2026 2:00 PM Description updated. First appearance in the feed. Weaknesses updated. Affected versions updated. Affected vendors updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		An authentication bypass using an alternate path or channel vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.6, FortiSandbox 4.4.0 through 4.4.9, FortiSandbox 4.2 all versions, FortiSandbox PaaS 5.0.0 through 5.0.6, FortiSandbox PaaS 4.4 all versions, FortiSandbox PaaS 4.2 all versions may allow attacker to execute unauthorized code or commands via crafted HTTP requests
First Time appeared		Fortinet Fortinet fortisandbox Fortinet fortisandboxpaas
Weaknesses		CWE-288
CPEs		cpe:2.3:a:fortinet:fortisandbox:4.2.1:::::::* cpe:2.3:a:fortinet:fortisandbox:4.2.2:::::::* cpe:2.3:a:fortinet:fortisandbox:4.2.3:::::::* cpe:2.3:a:fortinet:fortisandbox:4.2.4:::::::* cpe:2.3:a:fortinet:fortisandbox:4.2.5:::::::* cpe:2.3:a:fortinet:fortisandbox:4.2.6:::::::* cpe:2.3:a:fortinet:fortisandbox:4.2.7:::::::* cpe:2.3:a:fortinet:fortisandbox:4.2.8:::::::* cpe:2.3:a:fortinet:fortisandbox:4.4.0:::::::* cpe:2.3:a:fortinet:fortisandbox:4.4.1:::::::* cpe:2.3:a:fortinet:fortisandbox:4.4.2:::::::* cpe:2.3:a:fortinet:fortisandbox:4.4.3:::::::* cpe:2.3:a:fortinet:fortisandbox:4.4.4:::::::* cpe:2.3:a:fortinet:fortisandbox:4.4.5:::::::* cpe:2.3:a:fortinet:fortisandbox:4.4.6:::::::* cpe:2.3:a:fortinet:fortisandbox:4.4.7:::::::* cpe:2.3:a:fortinet:fortisandbox:4.4.8:::::::* cpe:2.3:a:fortinet:fortisandbox:4.4.9:::::::* cpe:2.3:a:fortinet:fortisandbox:5.0.0:::::::* cpe:2.3:a:fortinet:fortisandbox:5.0.1:::::::* cpe:2.3:a:fortinet:fortisandbox:5.0.2:::::::* cpe:2.3:a:fortinet:fortisandbox:5.0.3:::::::* cpe:2.3:a:fortinet:fortisandbox:5.0.4:::::::* cpe:2.3:a:fortinet:fortisandbox:5.0.5:::::::* cpe:2.3:a:fortinet:fortisandbox:5.0.6:::::::* cpe:2.3:a:fortinet:fortisandboxpaas:4.2.1:::::::* cpe:2.3:a:fortinet:fortisandboxpaas:4.2.2:::::::* cpe:2.3:a:fortinet:fortisandboxpaas:4.2.3:::::::* cpe:2.3:a:fortinet:fortisandboxpaas:4.2.4:::::::* cpe:2.3:a:fortinet:fortisandboxpaas:4.2.5:::::::* cpe:2.3:a:fortinet:fortisandboxpaas:4.2.6:::::::* cpe:2.3:a:fortinet:fortisandboxpaas:4.2.7:::::::* cpe:2.3:a:fortinet:fortisandboxpaas:4.2.8:::::::* cpe:2.3:a:fortinet:fortisandboxpaas:4.4.0:::::::* cpe:2.3:a:fortinet:fortisandboxpaas:4.4.1:::::::* cpe:2.3:a:fortinet:fortisandboxpaas:4.4.2:::::::* cpe:2.3:a:fortinet:fortisandboxpaas:4.4.3:::::::* cpe:2.3:a:fortinet:fortisandboxpaas:4.4.4:::::::* cpe:2.3:a:fortinet:fortisandboxpaas:4.4.5:::::::* cpe:2.3:a:fortinet:fortisandboxpaas:4.4.6:::::::* cpe:2.3:a:fortinet:fortisandboxpaas:4.4.7:::::::* cpe:2.3:a:fortinet:fortisandboxpaas:4.4.8:::::::* cpe:2.3:a:fortinet:fortisandboxpaas:4.4.9:::::::* cpe:2.3:a:fortinet:fortisandboxpaas:5.0.0:::::::* cpe:2.3:a:fortinet:fortisandboxpaas:5.0.1:::::::* cpe:2.3:a:fortinet:fortisandboxpaas:5.0.2:::::::* cpe:2.3:a:fortinet:fortisandboxpaas:5.0.3:::::::* cpe:2.3:a:fortinet:fortisandboxpaas:5.0.4:::::::* cpe:2.3:a:fortinet:fortisandboxpaas:5.0.5:::::::* cpe:2.3:a:fortinet:fortisandboxpaas:5.0.6:::::::*
Vendors & Products		Fortinet Fortinet fortisandbox Fortinet fortisandboxpaas
References		https://fortiguard.fortinet.com/psirt/FG-IR-26-185
Metrics		cvssV3_1 `{'score': 9.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C'}`