# CVE-2026-126245: CVE-2026-126245

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

A out-of-bounds write vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAuthenticator 6.6.0 through 6.6.10 may allow an unauthenticated attacker to execute unauthorized code or commands via http requests, should the attacker be able to defeat ASLR protections.

## Remediation

- fix: Upgrade to FortiAuthenticator version 8.0.4 or above
Upgrade to FortiAuthenticator version 6.6.11 or above (source: CNA: fortinet)

## Affected products and versions

- Fortinet / FortiAuthenticator: ≥ 8.0.0; ≤ 8.0.3 (affected, semver); ≥ 6.6.0; ≤ 6.6.10 (affected, semver). Source: CNA: fortinet

## Severity and prioritization

- CVSS 3.1: 8.1 (high); CVSS:3.1/AV:N/AC:H/PR:N/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-787

## Exploit evidence

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

## References

- https://fortiguard.fortinet.com/psirt/FG-IR-26-259 (CNA: fortinet)

## Provenance

- CNA: fortinet: https://www.cve.org/CVERecord?id=CVE-2026-126245; retrieved 2026-11-11; source updated 2026-11-11

Revision: 4f0c6eb3c31dba6abaff0ea259ffa06dc89e3eae43a08f2631095d27de85dc8d

Canonical: https://y2.dev/cve/CVE-2026-126245

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