{"id":"CVE-2015-7705","url":"https://www.cyber-defence.io/tools/cve/CVE-2015-7705","generatedAt":"2026-11-05T04:33:25.370Z","title":"The rate limiting feature in NTP 4.x before 4.2.8p4 and 4.3.x before 4.3.77 allows remote attackers to have unspecified impact via a large number of crafted requests.","description":"The rate limiting feature in NTP 4.x before 4.2.8p4 and 4.3.x before 4.3.77 allows remote attackers to have unspecified impact via a large number of crafted requests.","published":"2017-08-07T20:29:01.000Z","lastModified":"2026-06-17T00:33:00.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-20"],"affected":["ntp/ntp","netapp/oncommand performance manager","netapp/oncommand unified manager","netapp/clustered data ontap","netapp/data ontap","citrix/xenserver","siemens/tim 4r-ie firmware","siemens/tim 4r-ie dnp3 firmware"],"epss":{"score":0.12151,"percentile":0.9617,"date":"2026-11-04","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 12.2%, higher than 96% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00020.html","source":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00034.html","source":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00037.html","source":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00048.html","source":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00052.html","source":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00001.html","source":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00020.html","source":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html","source":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html","source":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-updates/2015-11/msg00093.html","source":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-updates/2016-05/msg00114.html","source":"cve@mitre.org"},{"url":"http://packetstormsecurity.com/files/134137/Slackware-Security-Advisory-ntp-Updates.html","source":"cve@mitre.org"},{"url":"http://support.ntp.org/bin/view/Main/NtpBug2901","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://support.ntp.org/bin/view/Main/SecurityNotice#October_2015_NTP_4_2_8p4_Securit","tags":["Release Notes","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151021-ntp","source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/archive/1/536737/100/0/threaded","source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/archive/1/536796/100/0/threaded","source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/archive/1/archive/1/536737/100/100/threaded","source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/archive/1/archive/1/536796/100/100/threaded","source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/77284","tags":["Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"http://www.securitytracker.com/id/1033951","tags":["Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"http://www.ubuntu.com/usn/USN-2783-1","source":"cve@mitre.org"},{"url":"https://bto.bluecoat.com/security-advisory/sa103","source":"cve@mitre.org"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1274184","tags":["Issue Tracking","Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf","source":"cve@mitre.org"},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://eprint.iacr.org/2015/1020.pdf","tags":["Technical Description"],"source":"cve@mitre.org"},{"url":"https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05270839","tags":["Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"https://security.gentoo.org/glsa/201607-15","tags":["Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"https://security.netapp.com/advisory/ntap-20171004-0001/","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://support.citrix.com/article/CTX220112","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://us-cert.cisa.gov/ics/advisories/icsa-21-103-11","tags":["Third Party Advisory","US Government Resource"],"source":"cve@mitre.org"},{"url":"https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11","source":"cve@mitre.org"},{"url":"https://www.arista.com/en/support/advisories-notices/security-advisories/1212-security-advisory-0016","source":"cve@mitre.org"},{"url":"https://www.cs.bu.edu/~goldbe/NTPattack.html","tags":["Not Applicable"],"source":"cve@mitre.org"},{"url":"https://www.kb.cert.org/vuls/id/718152","tags":["Third Party Advisory","US Government Resource"],"source":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00020.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00034.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00037.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00048.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00052.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00001.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00020.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-updates/2015-11/msg00093.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-updates/2016-05/msg00114.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://packetstormsecurity.com/files/134137/Slackware-Security-Advisory-ntp-Updates.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://support.ntp.org/bin/view/Main/NtpBug2901","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://support.ntp.org/bin/view/Main/SecurityNotice#October_2015_NTP_4_2_8p4_Securit","tags":["Release Notes","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151021-ntp","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/archive/1/536737/100/0/threaded","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/archive/1/536796/100/0/threaded","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/archive/1/archive/1/536737/100/100/threaded","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/archive/1/archive/1/536796/100/100/threaded","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/77284","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id/1033951","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.ubuntu.com/usn/USN-2783-1","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bto.bluecoat.com/security-advisory/sa103","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1274184","tags":["Issue Tracking","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2015-7705","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}