# CVE-2026-106172: Fortinet FortiSandbox hard-coded cryptographic key in API

Source: https://junglewise.ai/threats/cve-2026-106172-a-use-of-hard-coded-cryptographic-key-vulnerability-in-fortinet  
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-2026-106172 · Severity: medium · CVSS 5.3 · Published 2026-10-13

FortiSandbox is a malware analysis and sandbox appliance used to detect advanced threats. An attacker can bypass authentication on the API using a hard-coded cryptographic key, potentially gaining unauthorized access to the sandbox system and escalating privileges without needing valid credentials.

Technologies: [Fortinet FortiSandbox](https://junglewise.ai/threats/technologies/fortisandbox), [Fortinet Fortisandbox Cloud](https://junglewise.ai/threats/technologies/fortisandbox-cloud). Vendors: [Fortinet](https://junglewise.ai/threats/vendors/fortinet).

## Quick answers

**Is CVE-2026-106172 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-106172 being exploited in the wild.

**How severe is CVE-2026-106172?** Medium severity, with a CVSS score of 5.3, published 13 October 2026.

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

**Is there a fix for CVE-2026-106172?** Yes: fixed in FortiSandbox 5.2.2 or above, 5.0.7 or above; FortiSandbox Cloud 5.2.2 or above, 5.0.7 or above; FortiSandbox 4.4 and FortiSandbox Cloud 4.4 require migration to a fixed release. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-106172 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-106172?** Check whether you run Fortinet FortiSandbox or Fortinet Fortisandbox Cloud 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; FortiSandbox Cloud 5.2.2 or above, 5.0.7 or above; FortiSandbox 4.4 and FortiSandbox Cloud 4.4 require migration to a fixed release

## Technical details

A hard-coded cryptographic key in the FortiSandbox API (CWE-321) allows unauthenticated attackers to craft malicious HTTP requests and access protected endpoints. The vulnerability affects the API component across multiple FortiSandbox and FortiSandbox Cloud versions. An attacker on the network can exploit this to bypass authentication and potentially escalate privileges.

## Affected products

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

## Timeline

- 2026-10-13: disclosed: Public disclosure by Fortinet PSIRT

## References

- [https://fortiguard.fortinet.com/psirt/FG-IR-26-179](https://fortiguard.fortinet.com/psirt/FG-IR-26-179)

## 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 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 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)