CVE-2016-2519: Ntp

Medium severity, CVSS 5.9. EPSS: 6.9% chance of exploitation in the next 30 days.

ntpd in NTP before 4.2.8p7 and 4.3.x before 4.3.92 allows remote attackers to cause a denial of service (ntpd abort) by a large request data value, which triggers the ctl_getitem function to return a NULL value.

Affected products

• Ntp Ntp: up to and including 4.2.8; 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 2017-01-30. Last modified 2026-06-17.