CVE-2026-33601 — Insufficient validation of zonemd record

CVE-2026-33601

Insufficient validation of zonemd record PUBLISHED

Description (CNA)

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 (CNA)

Vendor / product	Versions
PowerDNS / Recursor	affected 5.4.0 before 5.4.1; affected 5.3.0 before 5.3.6; affected 5.2.0 before 5.2.9

CWE

No CWE identifiers supplied.

References

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

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.