CVE-2018-1046: Powerdns Pdns

High severity, CVSS 7.8. EPSS: 1.4% chance of exploitation in the next 30 days.

pdns before version 4.1.2 is vulnerable to a buffer overflow in dnsreplay. In the dnsreplay tool provided with PowerDNS Authoritative, replaying a specially crafted PCAP file can trigger a stack-based buffer overflow, leading to a crash and potentially arbitrary code execution. This buffer overflow only occurs when the -ecs-stamp option of dnsreplay is used.

Affected products

• Powerdns Pdns: before 4.1.2 (fixed in 4.1.2)

Published 2018-07-16. Last modified 2026-06-17.