{"cve":"CVE-2015-5300","nvd":{"published":"2017-07-21T14:29:00.927","modified":"2026-06-17T00:28:50.923","status":"Modified","description":"The panic_gate check in NTP before 4.2.8p5 is only re-enabled after the first change to the system clock that was greater than 128 milliseconds by default, which allows remote attackers to set NTP to an arbitrary time when started with the -g option, or to alter the time by up to 900 seconds otherwise by responding to an unspecified number of requests from trusted sources, and leveraging a resulting denial of service (abort and restart).","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-361"],"references":["http://aix.software.ibm.com/aix/efixes/security/ntp_advisory5.asc","http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170684.html","http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170926.html","http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177507.html","http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00059.html"],"products":["canonical:ubuntu_linux","debian:debian_linux","fedoraproject:fedora","ntp:ntp","opensuse:leap","opensuse:opensuse","redhat:enterprise_linux_desktop","redhat:enterprise_linux_hpc_node","redhat:enterprise_linux_hpc_node_eus","redhat:enterprise_linux_server","redhat:enterprise_linux_server_eus","redhat:enterprise_linux_workstation","suse:linux_enterprise_debuginfo","suse:linux_enterprise_desktop","suse:linux_enterprise_server","suse:linux_enterprise_software_development_kit","suse:manager","suse:manager_proxy","suse:openstack_cloud","suse:suse_linux_enterprise_server"],"source":"nvd","synced_at":"2026-10-19T20:44:47.710380879+00:00"},"epss":{"cve":"CVE-2015-5300","score":0.0913,"percentile":0.95313,"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."]}