{"cve":"CVE-2014-9751","nvd":{"published":"2015-10-06T01:59:02.610","modified":"2026-06-17T00:18:55.447","status":"Modified","description":"The read_network_packet function in ntp_io.c in ntpd in NTP 4.x before 4.2.8p1 on Linux and OS X does not properly determine whether a source IP address is an IPv6 loopback address, which makes it easier for remote attackers to spoof restricted packets, and read or write to the runtime state, by leveraging the ability to reach the ntpd machine's network interface with a packet from the ::1 address.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-20"],"references":["http://bugs.ntp.org/show_bug.cgi?id=2672","http://rhn.redhat.com/errata/RHSA-2015-1459.html","http://support.ntp.org/bin/view/Main/SecurityNotice#December_2014_NTP_Security_Vulne","http://www.debian.org/security/2015/dsa-3388","http://www.kb.cert.org/vuls/id/852879"],"products":["debian:debian_linux","ntp:ntp","oracle:linux","redhat:enterprise_linux_desktop","redhat:enterprise_linux_server","redhat:enterprise_linux_workstation"],"source":"nvd","synced_at":"2026-10-19T20:37:45.466985407+00:00"},"epss":{"cve":"CVE-2014-9751","score":0.04532,"percentile":0.91557,"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."]}