---
cve: "CVE-2020-4077"
severity: "HIGH"
cvss: 7.7
epss: "100%"
vendor: "electron"
kev: false
exploited: false
published: "2020-07-07 00:15:10"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-12T10:52:31+02:00"
---

# CVE-2020-4077

> 7.7 HIGH · 🧪 PoC

## Beschreibung

In Electron before versions 7.2.4, 8.2.4, and 9.0.0-beta21, there is a context isolation bypass. Code running in the main world context in the renderer can reach into the isolated Electron context and perform privileged actions. Apps using both `contextIsolation` and `contextBridge` are affected. This is fixed in versions 9.0.0-beta.21, 8.2.4 and 7.2.4.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
```

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

## Patch verfügbar (OSV)

- 0552e0d5de46ffa3b481d741f1db5c779e201565 (Commit)
- d8f90444aa654f886016a22cb771df99c3616178 (Commit)

## Referenzen

- <https://github.com/electron/electron/security/advisories/GHSA-h9jc-284h-533g>
- <https://www.electronjs.org/releases/stable?page=3#release-notes-for-v824>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2020-4077) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_