CVE-2026-26076 MEDIUM

CVE-2026-26076: ntpd-rs affected by excessive CPU load from malformed packets

Vendor Pendulum-Project
Product ntpd-rs
Weakness CWE-770 · Uncontrolled resource consumption
Published February 12, 2026
Last update February 13, 2026
View on NVD All CVEs

CVSS base score

6.9/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS 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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

February 12, 2026 CVE published
February 13, 2026 Record updated