CVE-2026-33261

published 2026-04-22

CVE-2026-33261: A zone transition from NSEC to NSEC3 might trigger an internal inconsistency and cause a denial of service.

Priority P4 25 medium 5.9 CVSS 3.1

AV N AC H PR N UI N S U C N I N A H

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

Affected

4 ranges

Vendor	Product	Version range	Fixed in
powerdns	recursor	—	—
powerdns	recursor	>= 5.2.0 < 5.2.9	5.2.9
powerdns	recursor	>= 5.3.0 < 5.3.6	5.3.6
powerdns	recursor	>= 5.4.0 < 5.4.1	5.4.1

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CWE-353