# CVE-2026-126261: CVE-2026-126261

Status: published. Published: 2026-11-10. Updated: 2026-11-14.

A improper authorization vulnerability in Fortinet FortiManager 8.0.0, FortiManager 7.6.0 through 7.6.7, FortiManager 7.4.0 through 7.4.5, FortiManager 7.2.0 through 7.2.8 may allow an unauthenticated attacker that can reach the FGFM port to execute code or commands via crafted FGFM packets.

## Remediation

- fix: Upgrade to FortiManager version 8.0.1 or above
Upgrade to FortiManager version 7.6.8 or above
Upgrade to FortiManager version 7.4.6 or above
Upgrade to FortiManager version 7.2.9 or above (source: CNA: fortinet)

## Affected products and versions

- Fortinet / FortiManager: 8.0.0 (affected); ≥ 7.6.0; ≤ 7.6.7 (affected, semver); ≥ 7.4.0; ≤ 7.4.5 (affected, semver); ≥ 7.2.0; ≤ 7.2.8 (affected, semver). Source: CNA: fortinet

## Severity and prioritization

- CVSS 3.1: 9 (critical); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C; source: CNA: fortinet

- CVSS 3.1: 9.8 (critical); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H; source: NVD: psirt@fortinet.com

- CISA KEV: No listing in collected sources

- EPSS: 0.78% as of 2026-11-13; percentile 56.60%

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

- Weaknesses: CWE-285

## Exploit evidence

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

## References

- https://fortiguard.fortinet.com/psirt/FG-IR-26-275 (CNA: fortinet)

- https://fortiguard.fortinet.com/psirt/FG-IR-26-275 (psirt@fortinet.com)

## Provenance

- CNA: fortinet: https://www.cve.org/CVERecord?id=CVE-2026-126261; retrieved 2026-11-14; source updated 2026-11-14

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-126261; retrieved 2026-11-13; source updated 2026-11-13

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-126261; retrieved 2026-11-14; source updated Not reported

Revision: 408c138544444c3c02ddc955b4669c3cc17c59bd930f2758bc025b6c2383438f

Canonical: https://y2.dev/cve/CVE-2026-126261

## 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.