CVE-2026-84390: Critical severity Fortinet FortiMonitorOnSight vulnerability

Published Sep 11, 2026
·
Updated

A inclusion of sensitive information in source code vulnerability in Fortinet FortiMonitorOnSight 7.2.4 through 7.2.7, FortiMonitorOnSight 7.2.0 through 7.2.2 may allow attacker to improper access control via <insert attack vector here>

Affected Software

1 affected component
Fortinet FortiMonitorOnSight>=7.2.4<=7.2.7, >=7.2.0<=7.2.2

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade Fortinet FortiMonitorOnSight to a version that resolves this vulnerability.

    Fixed in 7.2.8

Event History

Sep 11, 2026
CVE Published
via MITRE·12:13 PM
Data Sourced
via MITRE·12:13 PM
RemedyDescriptionSeverityWeakness

Frequently Asked Questions

1

Which deployments are in the affected version ranges?

FortiMonitorOnSight versions 7.2.4 through 7.2.7 and 7.2.0 through 7.2.2 are listed as affected. No information is provided about versions outside those ranges.

2

Does exploitation require authentication or user interaction?

The supplied severity vector indicates network-based exploitation with low attack complexity, no privileges required, and no user interaction required.

Contact

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