Vulnerability Intelligence Report
Fortinet FortiSandbox OS Command Injection Vulnerability
CVE-2026-39808
A improper neutralization of special elements used in an os command ('os command injection') vulnerability in Fortinet FortiSandbox 4.4.0 through 4.4.8 may allow attacker to execute unauthorized code or commands via <insert attack vector here>
CISA KEV
Nuclei Template
SSVC: Active Exploitation
Automatable
Injection
CVSS Base Score
9.1
CRITICAL
Exploitability:3.9
Impact Score:5.9
EPSS Probability:48.67%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-78 ↗Execute unauthorized code or commands
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Fortinet | FortiSandbox | 4.4.0 <= 4.4.8 (affected) |
| Fortinet | FortiSandbox PaaS | 23.4.4374 (affected), 23.4.4350 (affected), 23.3.4329 (affected), 23.1.4245 (affected), 22.2.4151 (affected), 22.2.4134 (affected), 22.1.4113 (affected), 21.4.4072 (affected), 21.3.4055 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
CISA KEV
ACTIVE IN CATALOG
Nuclei Template
SCANNER AVAILABLE
EPSS Score
48.668%
GitHub Advisory
Vulnerability Class
Injection
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Fortinet, Inc. · Vendor · USA |
| Reserved | 2026-04-07T15:24:03 |
| Published | 2026-04-14T15:38:02 |
| Last Updated | 2026-07-17T03:56:21 |
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