{"cve":"CVE-2016-4956","nvd":{"published":"2016-07-05T01:59:03.283","modified":"2026-06-17T00:48:29.990","status":"Modified","description":"ntpd in NTP 4.x before 4.2.8p8 allows remote attackers to cause a denial of service (interleaved-mode transition and time change) via a spoofed broadcast packet.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-1548.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","score":5.3},"cwes":[],"references":["http://bugs.ntp.org/3042","http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00018.html","http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00020.html","http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00023.html","http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00024.html"],"products":["novell:suse_manager","ntp:ntp","opensuse:leap","opensuse:opensuse","oracle:solaris","siemens:simatic_net_cp_443-1_opc_ua_firmware","suse:linux_enterprise_desktop","suse:linux_enterprise_server","suse:manager_proxy","suse:openstack_cloud"],"source":"nvd","synced_at":"2026-10-19T20:38:51.654415212+00:00"},"epss":{"cve":"CVE-2016-4956","score":0.16351,"percentile":0.96965,"date":"2026-11-01"},"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."]}