CYBERSIXT Signal Over Noise
All CVEs
Vulnerability intelligence

CVE-2026-39808

Fortinet FortiSandbox OS Command Injection Vulnerability

Fortinet FortiSandbox CWE-78

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>

CVSS Score
9.1
Critical
EPSS — Exploit Probability
90%
Riskier than 100% of all CVEs
Exploitation
Confirmed in the wild
Used in ransomware campaigns
Remediation
Patch available
Federal deadline 2026-07-19
CISA required action

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. Deadline for federal agencies: 2026-07-19.

NVD entry Vendor patch PoC / advisory CISA KEV

12 articles across 8 outlets · first covered Apr 15, 2026 · latest Jul 18, 2026

Coverage timeline

Related CVEs — Fortinet

CVE-2026-35616KEV CVE-2024-55591KEV CVE-2026-21643KEV