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>
Fix
Public exploits 7
- 0xBlackash/CVE-2026-39808 PoC on GitHub
- Ghost-Bx1/Fortinet-Exploits-CVE-2026-39808-106173-107656 PoC on GitHub
- HORKimhab/CVE-2026-39808 PoC on GitHub
- error-inside/CVE-2026-39808 PoC on GitHub
- gotr00t0day/CVE-2026-39808 PoC on GitHub
- samu-delucas/CVE-2026-39808 PoC on GitHub
- ynsmroztas/FortiSandbox-RCE-Exploit-CVE-2026-39808 PoC on GitHub
Each line links to the index that lists it, never to exploit code. Exploit-DB's "verified" and a Metasploit rank of good or better count as verified; a PoC-in-GitHub entry is a repository's claim.
CISA KEV required action · due 2026-07-19
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.
Added to the catalog 2026-07-16. CISA KEV
Patch, vendor advisory and mitigation references on NVD 1
- https://fortiguard.fortinet.com/psirt/FG-IR-26-100 Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 9.8 · in KEV · fortinetNVD modified 2026-10-26 21:10
Affected (CPE criteria) 1
cpe:2.3:a:fortinet:fortisandbox:*:*:*:*:*:*:*:*
References 3
- https://fortiguard.fortinet.com/psirt/FG-IR-26-100 Vendor Advisory
- https://github.com/samu-delucas/CVE-2026-39808 Exploit, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-39808 US Government Resource