VULNERABILITY INTELLIGENCE

CVE-2019-11331

CVSS score8.1 HIGH
EPSS probability2.64%
CISA KEVNot currently listed
Published2019-04-18
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

Network Time Protocol (NTP), as specified in RFC 5905, uses port 123 even for modes where a fixed port number is not required, which makes it easier for remote attackers to conduct off-path attacks.

Primary references