# CVE-2026-106172: CVE-2026-106172

Status: published. Published: 2026-10-13. Updated: 2026-11-13.

A use of hard-coded cryptographic key vulnerability in Fortinet FortiSandbox 5.2.0 through 5.2.1, FortiSandbox 5.0.0 through 5.0.6, FortiSandbox 4.4 all versions, FortiSandbox Cloud 5.2.0 through 5.2.1, FortiSandbox Cloud 5.0.0 through 5.0.6, FortiSandbox Cloud 4.4 all versions may allow attacker to escalation of privilege via specially crafted HTTP requests

## Remediation

- fix: Upgrade to FortiSandbox version 5.2.2 or above
Upgrade to FortiSandbox version 5.0.7 or above
Upgrade to FortiSandbox Cloud version 5.2.2 or above
Upgrade to FortiSandbox Cloud version 5.0.7 or above (source: CNA: fortinet)

## Affected products and versions

- Fortinet / FortiSandbox: ≥ 5.2.0; ≤ 5.2.1 (affected, semver); ≥ 5.0.0; ≤ 5.0.6 (affected, semver); ≥ 4.4.0; ≤ 4.4.10 (affected, semver). Source: CNA: fortinet
- Fortinet / FortiSandbox Cloud: ≥ 5.2.0; ≤ 5.2.1 (affected, semver); ≥ 5.0.0; ≤ 5.0.6 (affected, semver); ≥ 4.4.0; ≤ 4.4.9 (affected, semver). Source: CNA: fortinet

## Severity and prioritization

- CVSS 3.1: 4.9 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:F/RL:O/RC:C; source: CNA: fortinet

- CVSS 3.1: 5.3 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N; source: NVD: psirt@fortinet.com

- CISA KEV: No listing in collected sources

- EPSS: 0.24% as of 2026-11-12; percentile 14.87%

- SSVC: exploitation none; automatable yes; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-321

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

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

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

## Provenance

- CNA: fortinet: https://www.cve.org/CVERecord?id=CVE-2026-106172; retrieved 2026-11-13; source updated 2026-11-13

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-106172; retrieved 2026-11-13; source updated 2026-11-13

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-106172; retrieved 2026-11-13; source updated Not reported

Revision: dd38b437fc27e24864ff2275cd21f25dd7e5306c640e2f7febdba0e85b0f1eac

Canonical: https://y2.dev/cve/CVE-2026-106172

## Agent and API access

Public CVE pages, Markdown, and JSON are free to read without an account or API key.

- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.