CVE-2026-42387

published 2026-06-25

CVE-2026-42387: A malicious authoritative server can send a crafted zone via the ZoneToCache function that leads to a crash of the Recursor due to insuffcient input validation.

Priority P4 33 medium 5.9 CVSS 3.1

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

A malicious authoritative server can send a crafted zone via the ZoneToCache function that leads to a crash of the Recursor due to insuffcient input validation.

Affected

3 ranges

Vendor	Product	Version range	Fixed in
powerdns	recursor	>= 5.2.0 < 5.2.11	5.2.11
powerdns	recursor	>= 5.3.0 < 5.3.8	5.3.8
powerdns	recursor	>= 5.4.0 < 5.4.3	5.4.3

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CWE-20