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CVE-2026-39808: Fortinet FortiSandbox OS Command Injection Vulnerability

Fortinet FortiSandbox · in CISA KEV since 2026-07-16

2026-07-16added to KEV

2026-07-19federal remediation due date

92.82%EPSS exploit probability (30 days) 99.8th percentile

9.8 CRITICALCVSS 3.1

Unknownknown ransomware use

93days from NVD publication to KEV

What it is

Fortinet FortiSandbox contains an OS command injection vulnerability that could allow an unauthenticated attacker to execute unauthorized code or commands via crafted HTTP requests.

Required action (CISA)

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

CWE	CWE-78
CVSS vector	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
NVD published	2026-04-14 (Analyzed)

Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2026-39808.json · all KEV CVEs

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