VulnTideExploited vulnerabilities, by vendor. Data as of .
Not in CISA KEVPublished CVSS 9.6 criticalEPSS 0.5% probability of exploitation in 30 days
Fortinet

CVE-2026-84390: A inclusion of sensitive information in source code vulnerability in Fortinet FortiMonitorOnSight 7.2.4 through 7.2.7…

Is it exploited?

Not on CISA's list. CISA has not added it to the Known Exploited Vulnerabilities catalog as of . If CISA adds it, this page shows it as known exploited.

How likely is exploitation in the next 30 days?
0.5%

EPSS score, percentile 44.2 of all scored records. A probability estimated by FIRST, not a report of exploitation.

How severe?
9.6 Critical

CVSS v3.1 base score, given by the CNA

What should I do?

Upgrade to FortiMonitorOnSight version 7.2.8 or aboveSolution from the CVE record.

CISA has set no required action, because the vulnerability is not in KEV.

The CVE record links no vendor advisory, patch or mitigation.

Which versions are affected?

Affected

  • 7.2.4 through 7.2.7
  • 7.2.0 through 7.2.2

Versions by product

Source: CISA KEV 2026.10.29, as of ; FIRST EPSS, as of ; CVE List, as of . About the data.

What to do

Solution (from the CVE record)

Upgrade to FortiMonitorOnSight version 7.2.8 or above

Advisories and patches

The CVE record links no vendor advisory, patch or mitigation.

This summary is based on the CVE record as of . Check the vendor's advisory before you act: affected versions and fixes can change.

Affected products and versions

As listed in the CVE record.

Fortinet FortiMonitorOnSight
StatusVersions
Affected7.2.4 through 7.2.7
Affected7.2.0 through 7.2.2

Versions not listed are: unaffected.

Source: CVE List, as of . About the data.

About this vulnerability

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>

Summary: CVE record, as of .

  • CISA has not added CVE-2026-84390 to its Known Exploited Vulnerabilities (KEV) catalog, as of 29 Oct 2026.
  • The CVE record was published on 11 Sep 2026.
  • The CVE record carries a CVSS v3.1 base score of 9.6 (Critical), given by its CNA.
  • FIRST's EPSS model puts the probability of exploitation in the next 30 days at 0.5% (percentile 44.2), as of 29 Oct 2026. EPSS is a statistical estimate, not a report of exploitation.
  • CISA's SSVC assessment in the CVE record: exploitation none, automatable yes, technical impact total.

Source: CISA KEV 2026.10.29, as of ; CVE List, as of ; FIRST EPSS, as of . About the data.

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>

Source: CVE List, as of . About the data.

Weakness

CWE-540

CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record.

Timeline

DateEvent
CVE record published

References

1

Known exploited Fortinet vulnerabilities

  • CVE-2025-61624: Fortinet Multiple Products Path Traversal Vulnerability (added )
  • CVE-2026-104286: Fortinet FortiMail Path Traversal Vulnerability (added )
  • CVE-2025-25249: Fortinet Multiple Products Heap-based Buffer Overflow Vulnerability (added )
  • CVE-2025-68686: Fortinet FortiOS Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (added )
  • CVE-2026-25089: Fortinet FortiSandbox OS Command Injection Vulnerability (added )