PowerDNS (aka pdns) Authoritative Server before 4.0.1 allows remote primary DNS servers to cause a denial of service (memory exhaustion and secondary DNS server crash) via a large (1) AXFR or (2) IXFR response.
Severity
CVSS 3.0
6.8 medium
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
EPSS
3.8% chance of exploitation in the next 30 days; higher than 90% of CVEs (scores of 2026-10-31)