---
cve: "CVE-2026-84388"
severity: "CRITICAL"
cvss: 9.1
epss: "0.4%"
vendor: "Fortinet"
kev: false
exploited: false
published: "2026-09-22 15:17:18"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-10-25T12:56:09+01:00"
---

# CVE-2026-84388

> 9.1 CRITICAL

## Beschreibung

A improper restriction of rendered ui layers or frames vulnerability in Fortinet FortiPAM Chrome Extension 8.0 all versions, FortiPAM Chrome Extension 7.4 all versions may allow attacker to information disclosure via remote unauthenticated attack

## CNA-Record (Kanon, cvelistV5)

- CNA: **fortinet**
- State: PUBLISHED
- Stand: 2026-09-26 23:12:06
- CNA-CVSS: **9.1** (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L/E:P/RL:O/RC:C`)

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **no**
  - Technical Impact: **partial**

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L/E:P/RL:O/RC:C
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Erforderlich | good |
| S Scope | Verändert | bad |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Gering | warn |

## Schwachstellen-Klasse

- **CWE-1021** — Improper Restriction of Rendered UI Layers or Frames
  The web application does not restrict or incorrectly restricts frame objects or UI layers that belong to another application or domain.

## Angriffsmuster (CAPEC)

- [CAPEC-103 — Clickjacking](https://capec.mitre.org/data/definitions/103.html) _(Severity: High)_
- [CAPEC-181 — Flash File Overlay](https://capec.mitre.org/data/definitions/181.html) _(Severity: Medium)_
- [CAPEC-222 — iFrame Overlay](https://capec.mitre.org/data/definitions/222.html) _(Severity: High)_
- [CAPEC-504 — Task Impersonation](https://capec.mitre.org/data/definitions/504.html) _(Severity: High)_
- [CAPEC-506 — Tapjacking](https://capec.mitre.org/data/definitions/506.html) _(Severity: Low)_
- [CAPEC-587 — Cross Frame Scripting (XFS)](https://capec.mitre.org/data/definitions/587.html) _(Severity: High)_
- [CAPEC-654 — Credential Prompt Impersonation](https://capec.mitre.org/data/definitions/654.html) _(Severity: High)_

## ATT&CK-Techniken

- [T1036.004 — Masquerading: Masquerade Task or Service](https://attack.mitre.org/techniques/T1036/004/)
- [T1056 — Input Capture](https://attack.mitre.org/techniques/T1056/)
- [T1548.004 — Abuse Elevation Control Mechanism: Elevated Execution with P](https://attack.mitre.org/techniques/T1548/004/)

## Referenzen

- <https://fortiguard.fortinet.com/psirt/FG-IR-26-168>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2026-84388/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_