Vulnerability · Published Sep 11, 2026 · Assigned by fortinet
CVE-2026-84390
Critical 9.6
In plain English
A critical-severity security flaw in FortiMonitorOnSight from Fortinet. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities).
Severity (CVSS 3.1)9.6Critical
Exploit odds (30 days)0.5%top 55.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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 products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Fortinet | FortiMonitorOnSight | 7.2.4 – through 7.2.77.2.0 – through 7.2.2 |
Weakness: CWE-540 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C