ZoneToCache can poison the cache

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Summary

CVECVE-2026-33612
StatePUBLISHED
AssignerOX
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-25 13:16:38 UTC
Updated2026-06-25 16:00:30 UTC
DescriptionA malicious authoritative server can send a crafted zone via the ZoneToCache function that leads to cache poisoning.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:L

Problem Types: CWE-349 | Acceptance of Extraneous Untrusted Data With Trusted Data | CWE-349 CWE-349 Acceptance of Extraneous Untrusted Data With Trusted Data

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:L
3.1CNACVSS7.5HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:L

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
High
Availability
Low

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:L

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA PowerDNS Recursor affected 5.2.0 5.2.11 semver Not specified
CNA PowerDNS Recursor affected 5.3.0 5.3.8 semver Not specified
CNA PowerDNS Recursor affected 5.4.0 5.4.3 semver Not specified

References

ReferenceSourceLinkTags
docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-... [email protected] docs.powerdns.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Danial Mahadzir (en)

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