CVE-2026-33601

published 2026-04-22

CVE-2026-33601: 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…

Priority P4 24 medium 4.9 CVSS 3.1

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

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

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

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.

CWE-476