---
cve: "CVE-2025-12748"
severity: "MEDIUM"
cvss: 5.5
epss: "21%"
vendor: "Red Hat"
kev: false
exploited: false
published: "2025-11-11 20:15:34"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-10T12:18:49+02:00"
---

# CVE-2025-12748

> 5.5 MEDIUM

## Beschreibung

A flaw was discovered in libvirt in the XML file processing. More specifically, the parsing of user provided XML files was performed before the ACL checks. A malicious user with limited permissions could exploit this flaw by submitting a specially crafted XML file, causing libvirt to allocate too much memory on the host. The excessive memory consumption could lead to a libvirt process crash on the host, resulting in a denial-of-service condition.

## CVSS-Vektor

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

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

## Referenzen

- <https://access.redhat.com/errata/RHSA-2026:18326>
- <https://access.redhat.com/errata/RHSA-2026:18748>
- <https://access.redhat.com/security/cve/CVE-2025-12748>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2413801>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2025-12748) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_