# CVE-2026-106174: CVE-2026-106174

Status: published. Published: 2026-10-27. Updated: 2026-11-10.

A improper locking vulnerability in Fortinet FortiOS 8.0.0, FortiOS 7.6.4 through 7.6.6 may allow an unauthenticated attacker with network access to the device to cause a denial of service of the HTTPS management interface via crafted HTTP requests.

## Remediation

- fix: Upgrade to FortiOS version 8.0.1 or above
Upgrade to FortiOS version 7.6.7 or above (source: CNA: fortinet)

## Affected products and versions

- Fortinet / FortiOS: 8.0.0 (affected); ≥ 7.6.4; ≤ 7.6.6 (affected, semver). Source: CNA: fortinet
- Siemens / RUGGEDCOM APE1808: ≥ 0; < * (affected, custom). Source: ADP: siemens-SADP

## Severity and prioritization

- CVSS 3.1: 6.7 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C; source: CNA: fortinet

- CISA KEV: No listing in collected sources

- EPSS: 0.28% as of 2026-11-09; percentile 20.88%

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

- Weaknesses: CWE-667

## Exploit evidence

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

## References

- https://fortiguard.fortinet.com/psirt/FG-IR-26-181 (CNA: fortinet)

- https://cert-portal.siemens.com/productcert/html/ssa-127084.html (ADP: siemens-SADP)

## Provenance

- CNA: fortinet: https://www.cve.org/CVERecord?id=CVE-2026-106174; retrieved 2026-11-10; source updated 2026-11-10

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-106174; retrieved 2026-11-10; source updated Not reported

Revision: 44623321bc8268e0f6c845c6bd7ecfbd4453d4776f24c9278107d4048452df3c

Canonical: https://y2.dev/cve/CVE-2026-106174

## 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.

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