Medium severity5.0NVD Advisory· Published Apr 22, 2026· Updated Apr 27, 2026

CVE-2026-33259

Description

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.

Affected products

PowerDNS/Recursor2 versions
cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*range: >=5.2.0,<5.2.9
- cpe:2.3:a:powerdns:recursor:5.4.0:*:*:*:*:*:*:*

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-03.htmlnvdVendor AdvisoryBroken Link

News mentions

No linked articles in our index yet.

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