---
cve: "CVE-2026-5367"
severity: "HIGH"
cvss: 8.6
epss: "87%"
vendor: "Red Hat"
kev: false
exploited: false
published: "2026-04-24 13:16:21"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-07T04:14:25+02:00"
---

# CVE-2026-5367

> 8.6 HIGH

## Beschreibung

A flaw was found in OVN (Open Virtual Network). A remote attacker, by sending crafted DHCPv6 (Dynamic Host Configuration Protocol for IPv6) SOLICIT packets with an inflated Client ID length, could cause the ovn-controller to read beyond the bounds of a packet. This out-of-bounds read can lead to the disclosure of sensitive information stored in heap memory, which is then returned to the attacker's virtual machine port.

## CVSS-Vektor

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

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

## Referenzen

- <https://access.redhat.com/errata/RHSA-2026:11694>
- <https://access.redhat.com/errata/RHSA-2026:11695>
- <https://access.redhat.com/errata/RHSA-2026:11696>
- <https://access.redhat.com/errata/RHSA-2026:11698>
- <https://access.redhat.com/errata/RHSA-2026:11700>
- <https://access.redhat.com/errata/RHSA-2026:11701>
- <https://access.redhat.com/errata/RHSA-2026:11702>
- <https://access.redhat.com/errata/RHSA-2026:22110>
- <https://access.redhat.com/errata/RHSA-2026:22111>
- <https://access.redhat.com/security/cve/CVE-2026-5367>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2455863>
- <http://www.openwall.com/lists/oss-security/2026/04/20/3>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-5367) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_