High (7.5). EPSS 45% chance of exploitation in the next 30 days.
ntpd in NTP before 4.2.8p8 allows remote attackers to cause a denial of service (daemon crash) via a crypto-NAK packet. NOTE: this vulnerability exists because of an incorrect fix for CVE-2016-1547.
Severity
CVSS 3.1
7.5 high
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
45% chance of exploitation in the next 30 days; higher than 98% of CVEs (scores of 2026-10-31)