# CVE-2026-106170: Fortinet FortiSandbox persistent denial of service in GUI and CLI

Source: https://junglewise.ai/threats/cve-2026-106170-an-uncaught-exception-vulnerability-cwe-248-vulnerability-in  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-13. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-106170 · Severity: medium · CVSS 4.9 · Published 2026-10-13

Fortinet FortiSandbox is a malware analysis and sandboxing platform used to detect and analyze malicious code. A flaw in how the product handles certain HTTP requests allows a privileged administrator to crash the system's web interface and command-line access persistently, forcing a restart to restore functionality and disrupting security operations.

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

## Quick answers

**Is CVE-2026-106170 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-106170 being exploited in the wild.

**How severe is CVE-2026-106170?** Medium severity, with a CVSS score of 4.9, published 13 October 2026.

**Which products and versions are affected?** Fortinet FortiSandbox 5.2.0 through 5.2.1, 5.0.0 through 5.0.6, 4.4 all versions.

**Is there a fix for CVE-2026-106170?** Yes: fixed in FortiSandbox 5.2.2 or above; 5.0.7 or above; no fix available for 4.4 (migrate to fixed release). Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-106170 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-106170?** 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.

## How to fix

- Fixed in FortiSandbox 5.2.2 or above; 5.0.7 or above; no fix available for 4.4 (migrate to fixed release)

## Technical details

An uncaught exception vulnerability (CWE-248) in the FortiSandbox GUI component allows an authenticated attacker with administrative privileges to trigger a denial of service by sending specially crafted HTTP requests. The vulnerability affects the GUI component specifically and requires privileged access; it causes persistent unavailability of both GUI and CLI interfaces until system restart.

## Affected products

- Fortinet FortiSandbox 5.2.0 through 5.2.1, 5.0.0 through 5.0.6, 4.4 all versions

## Timeline

- 2026-10-13: disclosed

## References

- [https://fortiguard.fortinet.com/psirt/FG-IR-26-176](https://fortiguard.fortinet.com/psirt/FG-IR-26-176)

## 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 command injection in HTTP requests](https://junglewise.ai/threats/cve-2026-84387-fortinet-fortisandbox-command-injection-in-http-requests)
- [Fortinet FortiSandbox improper access control in web UI](https://junglewise.ai/threats/cve-2026-26084-fortinet-fortisandbox-improper-access-control-in-web-ui)