---
cve: "CVE-2026-4764"
severity: "CRITICAL"
cvss: 9.4
epss: "0.2%"
vendor: "Google Cloud"
kev: false
exploited: false
published: "2026-06-11 12:16:31"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-11-10T05:30:13+01:00"
---

# CVE-2026-4764

> 9.4 CRITICAL

## Beschreibung

A Missing Authorization vulnerability in the playbook import functionality in Dialogflow CX on Google Cloud Platform allows an authenticated user with specific roles to escalate privileges and potentially take over a GCP project using a maliciously crafted playbook import.


This vulnerability was patched on 15 March 2026, and no customer action is needed.

## CNA-Record (Kanon, cvelistV5)

- CNA: **GoogleCloud**
- State: PUBLISHED
- Stand: 2026-06-11 12:41:05
- CNA-CVSS: **9.4** (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/U:Clear`)

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **yes**
  - Technical Impact: **total**

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/U:Clear
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |

## Schwachstellen-Klasse

- **CWE-862** — Missing Authorization
  The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

## Angriffsmuster (CAPEC)

- [CAPEC-665 — Exploitation of Thunderbolt Protection Flaws](https://capec.mitre.org/data/definitions/665.html) _(Severity: Very High)_

## ATT&CK-Techniken

- [T1211 — Exploitation for Defensive Evasion](https://attack.mitre.org/techniques/T1211/)
- [T1542.002 — Pre-OS Boot: Component Firmware](https://attack.mitre.org/techniques/T1542/002/)
- [T1556 — Modify Authentication Process](https://attack.mitre.org/techniques/T1556/)

## Referenzen

- <https://docs.cloud.google.com/dialogflow/docs/release-notes#May_07_2026>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2026-4764/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_