Missing Authentication in Fortinet FortiOS

Publication date: 2026-11-11

Last updated on: 2026-11-11

Assigner: Fortinet, Inc.

Description

A missing authentication for critical function vulnerability in Fortinet FortiOS 8.0.0, FortiOS 7.6.0 through 7.6.7, FortiOS 7.4.0 through 7.4.12, FortiOS 7.2.0 through 7.2.13 may allow an unauthenticated attacker with HA FGSP + standalone-config-sync, or autoscale to execute command as super admin via crafted HA packets.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-11-11

Last Modified

2026-11-11

Generated

2026-11-12

EPSS Evaluated

N/A

NVD

CVE-2026-126259

EUVD

EUVD-2026-123906

Affected Vendors & Products

Vendor	Product	Version / Range
Fortinet	FortiOS	8.0.0
Fortinet	FortiOS	From 7.6.0 (inc) to 7.6.7 (inc)
Fortinet	FortiOS	From 7.4.0 (inc) to 7.4.12 (inc)
Fortinet	FortiOS	From 7.2.0 (inc) to 7.2.13 (inc)
Fortinet	FortiOS	From 7.0.0 (inc) to 7.0.19 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-306	The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

Attack-Flow Graph

AI Quick Actions have not been generated yet.

Hi! I’m here to help you understand CVE-2026-126259. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70

EPSS Chart

Security Radar

News mentioning this vulnerability

Loading related security news...