---
cve: "CVE-2026-33593"
severity: "HIGH"
cvss: 7.5
epss: "38%"
vendor: "PowerDNS"
kev: false
exploited: false
published: "2026-04-22 14:16:53"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-07T00:20:17+02:00"
---

# CVE-2026-33593

> 7.5 HIGH

## Beschreibung

A client can trigger a divide by zero error leading to crash by sending a crafted DNSCrypt query.

## CVSS-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| 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)

- 642a2bb5b67b2bf5c856819273d8f41fecbc0da8 (Commit)
- bfd0cbf4bf5c1f8757d0cd94c86ea88caf7b2f6d (Commit)

## Referenzen

- <https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-04.html>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-33593) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_