CVE-2026-33259 (GCVE-0-2026-33259)

Vulnerability from cvelistv5 – Published: 2026-04-22 09:38 – Updated: 2026-04-22 18:10
VLAI
Title
Concurrent modification of RPZ data can lead to denial of servce
Summary
Having many concurrent transfers of the same RPZ can lead to inconsistent RPZ data, use after free and/or a crash of the recursor. Normally concurrent transfers of the same RPZ zone can only occur with a malfunctioning RPZ provider.
Severity
5 (Medium)
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-22 17:52 UTC
CWE
  • Use After Free
  • CWE-416 - Use After Free
Assigner
OX CNA under the mitre root
CNA scorecard C 63/100 over 52 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
PowerDNS Recursor Affected: 5.4.0 , < 5.4.1 (semver)
Affected: 5.3.0 , < 5.3.6 (semver)
Affected: 5.2.0 , < 5.2.9 (semver)
guessed Create a notification for this product.
Date Public
2026-04-21 22:00
Credits
Haruto Kimura (Stella)
Show details on NVD website
To clipboard 

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