---
cve: "CVE-2026-56001"
severity: "HIGH"
cvss: 8.5
epss: "38%"
vendor: "X.org"
kev: false
exploited: false
published: "2026-07-08 09:16:30"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-11T15:24:15+02:00"
---

# CVE-2026-56001

> 8.5 HIGH

## Beschreibung

A heap buffer overflow in BitmapScaleBitmaps in libXfont2 before 2.0.8 due to an overflowing 32bit size could be used by attackers able to access the X Server to execute code within the X server cont

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- be0b08e2d354138d3222b4490e2a77c6ee42f778 (Commit)

## Referenzen

- <https://www.openwall.com/lists/oss-security/2026/07/08/1>
- <https://gitlab.freedesktop.org/xorg/lib/libxfont/-/commit/be0b08e2d354138d3222b4490e2a77c6ee42f778>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-56001) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_