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Vulnerability record · CVE-2015-7852 · published 7 August 2017

CVE-2015-7852: Ntp improper input validation vulnerability

Ntp · Ntp

ntpq in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service (crash) via crafted mode 6 response packets.

5.9 CVSS 3.1 Medium EPSS 12% · top 4.0% CWE-20 · Improper input validation
5.9CVSS 3.1 base score, v2 4.3
12%EPSS exploitation probability, 30 days
NoNot in CISA KEV
14Affected product versions listed by NVD
18References
17 Jun 2026Last modified by NVD

Description

ntpq in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service (crash) via crafted mode 6 response packets.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

14 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://rhn.redhat.com/errata/RHSA-2016-0780.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-2583.html Third Party Advisory
http://support.ntp.org/bin/view/Main/NtpBug2919 PatchVendor Advisory
http://www.debian.org/security/2015/dsa-3388 Third Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html Third Party Advisory
http://www.securityfocus.com/bid/77288 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1033951 Third Party AdvisoryVDB Entry
https://security.gentoo.org/glsa/201607-15 Third Party AdvisoryVDB Entry
https://security.netapp.com/advisory/ntap-20171004-0001/ Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0780.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-2583.html Third Party Advisory
http://support.ntp.org/bin/view/Main/NtpBug2919 PatchVendor Advisory
http://www.debian.org/security/2015/dsa-3388 Third Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html Third Party Advisory
http://www.securityfocus.com/bid/77288 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1033951 Third Party AdvisoryVDB Entry
https://security.gentoo.org/glsa/201607-15 Third Party AdvisoryVDB Entry
https://security.netapp.com/advisory/ntap-20171004-0001/ Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2015-7852), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.