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Vulnerability record · CVE-2018-7182 · published 6 March 2018

CVE-2018-7182: Ntp out-of-bounds read vulnerability

Ntp · Ntp

The ctl_getitem method in ntpd in ntp-4.2.8p6 before 4.2.8p11 allows remote attackers to cause a denial of service (out-of-bounds read) via a crafted mode 6 packet with a ntpd instance from 4.2.8p6 through 4.2.8p10.

7.5 CVSS 3.0 High EPSS 29% · top 1.9% CWE-125 · Out-of-bounds read
7.5CVSS 3.0 base score, v2 5.0
29%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
22References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

The ctl_getitem method in ntpd in ntp-4.2.8p6 before 4.2.8p11 allows remote attackers to cause a denial of service (out-of-bounds read) via a crafted mode 6 packet with a ntpd instance from 4.2.8p6 through 4.2.8p10.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

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

References

LinkTags
http://packetstormsecurity.com/files/146631/Slackware-Security-Advisory-ntp-Updates.html Third Party AdvisoryVDB Entry
http://support.ntp.org/bin/view/Main/NtpBug3412 MitigationVendor Advisory
http://www.securityfocus.com/archive/1/541824/100/0/threaded Third Party AdvisoryVDB Entry
http://www.securityfocus.com/bid/103191 Third Party AdvisoryVDB Entry
https://security.FreeBSD.org/advisories/FreeBSD-SA-18:02.ntp.asc PatchThird Party Advisory
https://security.gentoo.org/glsa/201805-12 Third Party Advisory
https://security.netapp.com/advisory/ntap-20180626-0001/ Third Party Advisory
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03962en_us
https://usn.ubuntu.com/3707-1/ Third Party Advisory
https://www.exploit-db.com/exploits/45846/ ExploitThird Party AdvisoryVDB Entry
https://www.synology.com/support/security/Synology_SA_18_13 Third Party Advisory
http://packetstormsecurity.com/files/146631/Slackware-Security-Advisory-ntp-Updates.html Third Party AdvisoryVDB Entry
http://support.ntp.org/bin/view/Main/NtpBug3412 MitigationVendor Advisory
http://www.securityfocus.com/archive/1/541824/100/0/threaded Third Party AdvisoryVDB Entry
http://www.securityfocus.com/bid/103191 Third Party AdvisoryVDB Entry
https://security.FreeBSD.org/advisories/FreeBSD-SA-18:02.ntp.asc PatchThird Party Advisory
https://security.gentoo.org/glsa/201805-12 Third Party Advisory
https://security.netapp.com/advisory/ntap-20180626-0001/ Third Party Advisory
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03962en_us
https://usn.ubuntu.com/3707-1/ Third Party Advisory
https://www.exploit-db.com/exploits/45846/ ExploitThird Party AdvisoryVDB Entry
https://www.synology.com/support/security/Synology_SA_18_13 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2018-7182), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.