CVE-2026-33259
Concurrent modification of RPZ data can lead to denial of servce
Vexday Risk Score
13Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 5EPSS 0.2%KEV nãoPoC —Patch —
Lifecycle
22 Apr 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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.
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:H
Affected products
PowerDNS · RecursorWant to know if your infrastructure is exposed to this?
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