CVE-2017-6463: Ntp

Medium severity, CVSS 6.5. EPSS: 5.2% chance of exploitation in the next 30 days.

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.

Affected products

• Ntp Ntp: version 4.2.8 only; version 4.3.0 only; version 4.3.1 only; version 4.3.2 only; version 4.3.3 only; version 4.3.4 only; …

Published 2017-03-27. Last modified 2026-06-17.