CVE-2026-33608: Powerdns Authoritative

Critical severity, CVSS 9.8. EPSS: 0.6% chance of exploitation in the next 30 days.

An attacker can send a notify request that causes a new secondary domain to be added to the bind backend, but causes said backend to update its configuration to an invalid one, leading to the backend no longer able to run on the next restart, requiring manual operation to fix it.

Affected products

• Powerdns Authoritative: from 4.9.0, before 4.9.14 (fixed in 4.9.14); from 5.0.0, before 5.0.4 (fixed in 5.0.4)

Published 2026-04-22. Last modified 2026-06-17.