---
cve: "CVE-2026-33754"
severity: "MEDIUM"
cvss: 6.5
epss: "0.4%"
vendor: "wazuh"
kev: false
exploited: false
published: "2026-07-16 23:40:59"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-24T21:00:55+02:00"
---

# CVE-2026-33754

> 6.5 MEDIUM · 🧪 PoC

## Beschreibung

Wazuh is a free and open source platform used for threat prevention, detection, and response. In versions 3.9.0 and above, prior to 4.14.5, a remote attacker can trigger memory exhaustion in the cluster protocol parser by sending a crafted message header with an arbitrarily large payload length. The length is trusted before authentication/decryption and used directly to allocate memory, allowing unauthenticated denial of service of the cluster service. This issue has been fixed in version 4.14.5.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 460511d384aadc1d539caa6c4aa6a4234d68c9ba (Commit)

## Referenzen

- <https://github.com/wazuh/wazuh/security/advisories/GHSA-476v-28pp-5wg9>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-33754) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_