Paper/Archive/CVE-2026-39808

CVE-2026-39808

Fortinet FortiSandbox — Fortinet FortiSandbox OS Command Injection Vulnerability

KEV · due 19 Jul EPSS 93%public exploit SSVC act CVSS 9.1

CVSS 9.1 (CNA)9.1 / 10 × 3027.3 In CISA KEV+3030.0 EPSS percentile 99.8.998 × 2020.0 Exploit: SSVC active+1010.0 SSVC exploitation: active+1010.0

Description · from the CVE record

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>

Affected

ProductAffectedFixed inSource

FortiSandbox4.4.0 – 4.4.8–CNA

FortiSandbox PaaS23.4.4374–CNA

FortiSandbox PaaS23.4.4350–CNA

FortiSandbox PaaS23.3.4329–CNA

FortiSandbox PaaS23.1.4245–CNA

FortiSandbox PaaS22.2.4151–CNA

FortiSandbox PaaS22.2.4134–CNA

FortiSandbox PaaS22.1.4113–CNA

FortiSandbox PaaS21.4.4072–CNA

FortiSandbox PaaS21.3.4055–CNA

Scores by source

fortinet (CNA)9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C

CISA ADPSSVCExploitation: active · Automatable: yes · Technical impact: total

References

reffortiguard.fortinet.com/psirt/FG-IR-26-100 exploitgithub.com/samu-delucas/CVE-2026-39808 refcisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-39808 kevcisa.gov/known-exploited-vulnerabilities-catalog