Fortinet FortiSandbox OS Command Injection Vulnerability
Fortinet FortiSandbox, FortiSandbox Cloud, and FortiSandbox PaaS contain an OS command injection vulnerability that allows an unauthenticated attacker to execute unauthorized commands via specifically crafted HTTP requests.
Browse Remote Code Execution security risksQuick answer
Fortinet FortiSandbox should be reviewed and updated if it matches the affected versions. The recommended fix is to apply the vendor-supported patched version or the mitigation steps below, then retest the public website with Fixnx.
Who is affected
Affected versions
- Review vendor advisory for affected versions.
Fixed versions
- Apply the latest vendor-supported patched version.
How to fix it
CVE-2026-25089 affects Fortinet FortiSandbox. The issue is an OS command injection bug in crafted HTTP requests. An unauthenticated attacker could run code or commands on the affected system. Patch FortiSandbox quickly and restrict management access until fixed.
- Upgrade FortiSandbox, FortiSandbox Cloud, or FortiSandbox PaaS to a Fortinet release that fixes CVE-2026-25089.
- Restrict admin and appliance web access to trusted networks or a VPN only.
- Block direct internet access to the FortiSandbox management interface.
- Review web, system, and Fortinet logs for unusual HTTP requests or unexpected command output.
- Rotate credentials and API tokens if there is any sign the appliance was accessed before patching.
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Verify the fix
- Confirm the Fortinet build number matches the fixed advisory release.
- Run a fresh vulnerability scan and confirm this CVE no longer appears.
- Check logs after patching to confirm no new suspicious HTTP requests are reaching the interface.
Related categories
Related security risks
More published guidance from the same primary category.
Trusted references
FAQ
What is affected by CVE-2026-25089?
Fortinet FortiSandbox should be checked against the vendor advisory and trusted references linked on this page.
What should I fix first?
Start with internet-facing sites, admin panels, login flows, plugins, themes, modules, packages, and systems that process user-controlled input or sensitive data.
How do I confirm the fix worked?
Apply the patched version or mitigation, clear caches where relevant, retest the affected workflow, and run a new Fixnx scan to verify public website exposure signals.
How are Fixnx security risk categories chosen?
Fixnx keeps one canonical risk page and assigns only broad, relevant categories such as ecosystem, technology area, or vulnerability class.