# CVE-2026-126167: CVE-2026-126167

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

A improper neutralization of special elements used in a command ('command injection') vulnerability in Fortinet FortiMail 8.0.0 through 8.0.2, FortiMail 7.6.0 through 7.6.6, FortiMail 7.4.0 through 7.4.8, FortiMail 7.2 all versions may allow an authenticated remote attacker with domain admin or admin privileges to delete users of other tenant domains on a paired FortiAuthenticator, execute arbitrary code as root or arbitrary CLI commands, and read or write arbitrary files as root via crafted HTTP requests to the administrative interface.

## Remediation

- fix: Upgrade to upcoming  FortiMail version 8.0.3 or above
Upgrade to FortiMail version 7.6.7 or above
Upgrade to FortiMail version 7.4.9 or above (source: CNA: fortinet)

## Affected products and versions

- Fortinet / FortiMail: ≥ 8.0.0; ≤ 8.0.2 (affected, semver); ≥ 7.6.0; ≤ 7.6.6 (affected, semver); ≥ 7.4.0; ≤ 7.4.8 (affected, semver); ≥ 7.2.0; ≤ 7.2.9 (affected, semver). Source: CNA: fortinet

## Severity and prioritization

- CVSS 3.1: 7.2 (high); CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C; source: CNA: fortinet

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-77

## Exploit evidence

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

## References

- https://fortiguard.fortinet.com/psirt/FG-IR-26-218 (CNA: fortinet)

## Provenance

- CNA: fortinet: https://www.cve.org/CVERecord?id=CVE-2026-126167; retrieved 2026-11-11; source updated 2026-11-11

Revision: e00b344942f617645d4e6a8297443bf9c160e0dcdd66f6902387c502c20f2483

Canonical: https://y2.dev/cve/CVE-2026-126167

## 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.