{"cve":"CVE-2016-6172","nvd":{"published":"2016-09-26T16:59:04.947","modified":"2026-06-17T00:50:34.583","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H","score":6.8},"cwes":["CWE-400"],"references":["http://lists.opensuse.org/opensuse-updates/2016-08/msg00085.html","http://www.debian.org/security/2016/dsa-3664","http://www.openwall.com/lists/oss-security/2016/07/06/3","http://www.securityfocus.com/bid/91678","http://www.securitytracker.com/id/1036242"],"products":["opensuse:leap","opensuse:opensuse","powerdns:authoritative_server"],"source":"nvd","synced_at":"2026-10-19T20:40:10.783210791+00:00"},"epss":{"cve":"CVE-2016-6172","score":0.03824,"percentile":0.90074,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}