CVE-2026-33258

published 2026-04-22

CVE-2026-33258: By publishing and querying a crafted zone an attacker can cause allocation of large entries in the negative and aggressive NSEC(3) caches.

Priority P3 41 high 7.5 CVSS 3.1

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

By publishing and querying a crafted zone an attacker can cause allocation of large entries in the negative and aggressive NSEC(3) caches.

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-770