Crafted delegations or IP fragments can poison cached delegations in Recursor

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2025-59023
StatePUBLISHED
AssignerOX
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-02-09 15:16:10 UTC
Updated2026-04-20 15:11:13 UTC
DescriptionCrafted delegations or IP fragments can poison cached delegations in Recursor.

Risk And Classification

Primary CVSS: v3.1 8.2 HIGH from [email protected]

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

Problem Types: CWE-294 | Insufficient Verification of Data Authenticity

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.2HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
3.1CNACVSS8.2HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L

CVSS v3.1 Breakdown

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

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Powerdns Recursor All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA PowerDNS Recursor affected 5.3.0 5.3.1 semver Not specified
CNA PowerDNS Recursor affected 5.2.0 5.2.6 semver Not specified
CNA PowerDNS Recursor affected 5.1.0 5.1.8 semver Not specified

References

ReferenceSourceLinkTags
docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2025-06.html [email protected] docs.powerdns.com Vendor Advisory
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: Yuxiao Wu from Tsinghua University (en)

CNA: Yunyi Zhang from Tsinghua University (en)

CNA: Baojun Liu from Tsinghua University (en)

CNA: Haixin Duan from Tsinghua University (en)

CNA: Shiming Liu from Network and Information Security Lab, Tsinghua University (en)

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