CVE-2026-33261 MEDIUM

CVE-2026-33261: Null pointer accces in aggressive NSEC(3) cache

Vendor Powerdns
Product Recursor
Published April 22, 2026
Last update April 22, 2026
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CVSS base score

5.9/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

A zone transition from NSEC to NSEC3 might trigger an internal inconsistency and cause a denial of service.

Key dates

02Disclosure timeline

April 22, 2026 CVE published
April 22, 2026 Record updated