CVE-2017-6463

6.5 mediumEPSS 5.2%

NTP before 4.2.8p10 and 4.3.x before 4.3.94 allows remote authenticated users to cause a denial of service (daemon crash) via an invalid setting in a :config directive, related to the unpeer option.

Severity

CVSS 3.0

6.5 medium

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

EPSS: 5.2% chance of exploitation in the next 30 days; higher than 92% of CVEs (scores of 2026-10-31)
CWE: CWE-20
Published: 2017-03-27
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

ntp:ntp

References

http://support.ntp.org/bin/view/Main/NtpBug3387
http://support.ntp.org/bin/view/Main/SecurityNotice#March_2017_ntp_4_2_8p10_NTP_Secu
http://www.securityfocus.com/bid/97049
http://www.securitytracker.com/id/1038123
https://access.redhat.com/errata/RHSA-2017:3071

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