CVE-2026-25089
Unauthenticated OS command injection in FortiSandbox via crafted HTTP requests.
Is CVE-2026-25089 being exploited?
Yes. CVE-2026-25089 appears in CISA's Known Exploited Vulnerabilities catalog, which means exploitation in the wild has been confirmed and reported. Treat it as active rather than theoretical, and patch it ahead of higher-scoring vulnerabilities that carry no exploitation evidence.
How severe is CVE-2026-25089?
CVE-2026-25089 is rated Critical with a CVSS score of 9.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-25089?
Yes. A fix has been recorded for CVE-2026-25089. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-25089 affect?
CVE-2026-25089 affects FortiSandbox on-prem: 4.2 all versions, FortiSandbox on-prem: 4.4.0-4.4.8, FortiSandbox on-prem: 5.0.0-5.0.5, FortiSandbox Cloud: 5.0.4-5.0.5, and 1 further product or version. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-25089?
Upgrade to fixed release when available; restrict FortiSandbox HTTP interfaces
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated remote command execution on FortiSandbox; attacker can run arbitrary commands with FortiSandbox privileges.
Immediate action required
- affected>= 5.0.0 and <= 5.0.5
- affected>= 4.4.0 and <= 4.4.8
- affected>= 4.2.1 and <= 4.2.8
- affected>= 5.0.4 and <= 5.0.5
- affected>= 5.0.4 and <= 5.0.5
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.