ntpd-rs is a full-featured implementation of the Network Time Protocol. Prior to 1.7.1, an attacker can remotely induce moderate increases (2-4 times above normal) in cpu usage. When having NTS enabled on an ntpd-rs server, an attacker can create malformed NTS packets that take significantly more effort for the server to respond to by requesting a large number of cookies. This can lead to degraded server performance even when a server could otherwise handle the load. This vulnerability is fixed in 1.7.1.
History

Thu, 12 Feb 2026 22:00:00 +0000

Type Values Removed Values Added
Description ntpd-rs is a full-featured implementation of the Network Time Protocol. Prior to 1.7.1, an attacker can remotely induce moderate increases (2-4 times above normal) in cpu usage. When having NTS enabled on an ntpd-rs server, an attacker can create malformed NTS packets that take significantly more effort for the server to respond to by requesting a large number of cookies. This can lead to degraded server performance even when a server could otherwise handle the load. This vulnerability is fixed in 1.7.1.
Title ntpd-rs affected by excessive CPU load from malformed packets
Weaknesses CWE-770
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-02-12T21:48:44.651Z

Reserved: 2026-02-10T18:01:31.901Z

Link: CVE-2026-26076

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-02-12T22:16:06.960

Modified: 2026-02-12T22:16:06.960

Link: CVE-2026-26076

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.