CVE-2026-33612

ZoneToCache can poison the cache

State: Published
Severity: 7.5 High
Published: Jun 25, 2026
Updated: Jun 25, 2026
Reserved: Mar 23, 2026

Description

A malicious authoritative server can send a crafted zone via the ZoneToCache function that leads to cache poisoning.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:L	OX

Weaknesses

CWE-349 Acceptance of Extraneous Untrusted Data With Trusted Data

Affected Products

Product	Versions
RecursorPowerDNS	5.2.0 to before 5.2.11Affected 5.3.0 to before 5.3.8Affected 5.4.0 to before 5.4.3Affected

References

https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-08.html

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