PatchSiren

Knot Dns CVE debriefs

These pages are published after PatchSiren validates generated defensive summaries against stored public CVE and source evidence.

HIGH Knot Dns CVE published 2017-02-09

CVE-2016-6171

CVE-2016-6171 is a high-severity availability issue in Knot DNS before 2.3.0. A remote DNS server can trigger memory exhaustion and crash a slave server by causing a large zone transfer through DDNS, AXFR, or IXFR. The issue was published by NVD on 2017-02-09 and later updated on 2026-05-13.