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Vulnerability record · CVE-2015-7854 · published 7 August 2017

CVE-2015-7854: Ntp classic buffer overflow vulnerability

Ntp · Ntp

Buffer overflow in the password management functionality in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote authenticated users to cause a denial of service (daemon crash) or possibly execute arbitrary code via a crafted key file.

8.8 CVSS 3.1 High EPSS 15% · top 3.5% CWE-120 · Classic buffer overflow
8.8CVSS 3.1 base score, v2 6.5
15%EPSS exploitation probability, 30 days
NoNot in CISA KEV
6Affected product versions listed by NVD
12References
17 Jun 2026Last modified by NVD

Description

Buffer overflow in the password management functionality in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote authenticated users to cause a denial of service (daemon crash) or possibly execute arbitrary code via a crafted key file.

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

Affected products

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

References

LinkTags
http://support.ntp.org/bin/view/Main/NtpBug2921 PatchVendor Advisory
http://www.securityfocus.com/bid/77277 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1033951 Third Party AdvisoryVDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1274263 Issue TrackingThird 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://support.ntp.org/bin/view/Main/NtpBug2921 PatchVendor Advisory
http://www.securityfocus.com/bid/77277 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1033951 Third Party AdvisoryVDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1274263 Issue TrackingThird 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-2015-7854), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.