---
cve: "CVE-2026-84131"
severity: "HIGH"
cvss: 8.8
epss: "18.4%"
vendor: "Generic Security"
kev: false
exploited: false
published: "2026-09-01 13:20:07"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-07T08:42:40+02:00"
---

# CVE-2026-84131

> 8.8 HIGH

## Beschreibung

Privilege escalation due to invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.

## CVSS-Vektor

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

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

## Referenzen

- <https://bugzilla.mozilla.org/show_bug.cgi?id=2060008>
- <https://www.mozilla.org/security/advisories/mfsa2026-82/>
- <https://www.mozilla.org/security/advisories/mfsa2026-83/>
- <https://www.mozilla.org/security/advisories/mfsa2026-84/>
- <https://www.mozilla.org/security/advisories/mfsa2026-85/>
- <https://www.mozilla.org/security/advisories/mfsa2026-86/>
- <https://www.mozilla.org/security/advisories/mfsa2026-87/>
- <https://www.mozilla.org/security/advisories/mfsa2026-88/>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-84131) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_