# CVE-2026-84387: Fortinet FortiSandbox command injection in HTTP requests

Source: https://junglewise.ai/threats/cve-2026-84387-fortinet-fortisandbox-command-injection-in-http-requests  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-08. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-84387 · Severity: high · CVSS 7.2 · Published 2026-09-08

FortiSandbox is a malware analysis and sandboxing appliance used by enterprises to safely detonate and analyze suspicious files. A command injection vulnerability in its web interface allows a privileged attacker to execute arbitrary commands on the system through crafted HTTP requests, potentially compromising the integrity of threat analysis operations and lateral movement into the network.

Technologies: [Fortinet FortiSandbox](https://junglewise.ai/threats/technologies/fortisandbox). Vendors: [Fortinet](https://junglewise.ai/threats/vendors/fortinet).

## Quick answers

**Is CVE-2026-84387 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-84387 being exploited in the wild.

**How severe is CVE-2026-84387?** High severity, with a CVSS score of 7.2, published 8 September 2026.

**Which products and versions are affected?** Fortinet FortiSandbox 4.4.0 through 4.4.9, 5.0.0 through 5.0.6, 5.2.0.

**Is there a fix for CVE-2026-84387?** A patch was published on 2026-09-08: FortiSandbox 4.4.10+, 5.0.7+, 5.2.1+ available Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-84387 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-84387?** Check whether you run Fortinet FortiSandbox at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

An improper neutralization of special elements in command strings (CWE-77 / command injection) exists in the FortiSandbox GUI component. The vulnerability is triggered via crafted HTTP requests and requires authenticated access (privileged user credentials). A successful exploit allows an attacker to execute unauthorized system commands with FortiSandbox process privileges. The vulnerability affects FortiSandbox 4.4.0–4.4.9, 5.0.0–5.0.6, and 5.2.0; patches are available (4.4.10+, 5.0.7+, 5.2.1+).

## Affected products

- Fortinet FortiSandbox 4.4.0 through 4.4.9, 5.0.0 through 5.0.6, 5.2.0

## Timeline

- 2026-09-08: disclosed
- 2026-09-08: patched: FortiSandbox 4.4.10+, 5.0.7+, 5.2.1+ available

## References

- [https://fortiguard.fortinet.com/psirt/FG-IR-26-167](https://fortiguard.fortinet.com/psirt/FG-IR-26-167)

## Related threats

- [Fortinet FortiSandbox cross-site scripting in web UI](https://junglewise.ai/threats/cve-2026-26248-a-improper-neutralization-of-input-during-web-page-generation)
- [Fortinet FortiSandbox authentication bypass in web management interface](https://junglewise.ai/threats/cve-2026-107656-an-authentication-bypass-using-an-alternate-path-or-channel)
- [Fortinet FortiSandbox hard-coded cryptographic key in API](https://junglewise.ai/threats/cve-2026-106172-a-use-of-hard-coded-cryptographic-key-vulnerability-in-fortinet)
- [Fortinet FortiSandbox persistent denial of service in GUI and CLI](https://junglewise.ai/threats/cve-2026-106170-an-uncaught-exception-vulnerability-cwe-248-vulnerability-in)
- [Fortinet FortiSandbox improper access control in web UI](https://junglewise.ai/threats/cve-2026-26084-fortinet-fortisandbox-improper-access-control-in-web-ui)