CVE-2019-3807: Powerdns Recursor

Critical severity, CVSS 9.8. EPSS: 0.4% chance of exploitation in the next 30 days.

An issue has been found in PowerDNS Recursor versions 4.1.x before 4.1.9 where records in the answer section of responses received from authoritative servers with the AA flag not set were not properly validated, allowing an attacker to bypass DNSSEC validation.

Affected products

• Powerdns Recursor: from 4.1.0, up to and including 4.1.8

Published 2019-01-29. Last modified 2026-06-17.