CVE-2019-11331

HighCVSS 8.1/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.0 8.1/10CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected software

No affected versions have been published.

Timeline

Published
Apr 18, 2019
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2019-11331: High severity, CVSS 8.1 | Vulnix