CISA added the Fortinet FortiSandbox OS command injection vulnerability CVE-2026-39808 to its Known Exploited Vulnerabilities catalog on 2026-07-16. Federal agencies have until 2026-07-19 to apply vendor mitigations under BOD 26-04 or discontinue use if patches are unavailable.
The flaw, tracked as CVE-2026-39808, could allow an unauthenticated attacker to execute unauthorized code or commands via crafted HTTP requests.
If mitigations are unavailable, they must discontinue use of the product.
Enterprises running on-premises SharePoint should treat this KEV addition as an immediate patching priority given confirmed active exploitation.
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