CVE-2020-11868

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows an off-path attacker to block unauthenticated synchronization via a server mode packet with a spoofed source IP address, because transmissions are rescheduled even when a packet lacks a valid origin timestamp.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-346

Affected software

No affected versions have been published.

Timeline

Published: Apr 17, 2020
Last modified: Jun 17, 2026
NVD status: Modified

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