CVE-2026-39808

Fortinet FortiSandboxActively Exploited (CISA KEV)CVSS 9.8KEV0-Day

Actively exploited (CISA KEV) - patch before 2026-07-19

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

Actively exploited in the wild and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog. No distribution fix is listed yet; apply vendor mitigations and monitor.

Recommended action: No fix is published yet for an actively-exploited flaw. Apply vendor mitigations, restrict exposure, and watch for a patch.

CVE-2026-39808 Fortinet FortiSandbox Actively Exploited (CISA KEV)

Severity metrics

CVSS 3.1 : 9.8 CRITICAL

Attack vectorNetwork (remote)

Attack complexityLow

Privileges requiredNone

User interactionNone

ScopeUnchanged

Confidentiality impactHigh

Integrity impactHigh

Availability impactHigh

Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected & fixed versions by distribution

Versions are the native distribution strings (backport-aware): RHEL/Debian/SUSE backport fixes, so compare with the distro version comparator (dpkg / rpm / vercmp), not the upstream version.

No affected package in the tracked watchlist yet (Debian, Ubuntu, Arch, SUSE, Red Hat...). Triage may still be pending.

Sources

Advisory NVD CVE.org

Published 2026-07-16 · source: CISA Known Exploited Vulnerabilities