CVE-2026-33601

Published: Apr 22, 2026Modified: Jun 17, 2026

4.9

Vector

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

Exploitability: 1.2 / Impact: 3.6

Source: NVD

Description

If you use the zoneToCache function with a malicious authoritative server, an attacker can send a zone that result in a null pointer dereference, caused by a missing consistency check and leading to a denial of service.

Affected (3)

Products: Powerdns: Recursor

Powerdns

1 product

Recursor

Configuration A

3 vulnerable

Vulnerable Software	Affected Versions
Powerdns Recursor	From 5.2.0 to 5.2.9
Powerdns Recursor	From 5.3.0 to 5.3.6
Powerdns Recursor	Version 5.4.0

Related CWEs

CWE-476

NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

References (1)

https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-03.html

Source: security@open-xchange.com

Broken LinkVendor Advisory

Timeline

No history available yet.