CVE-2025-58066: Pendulum-Project Ntpd-RS

Medium severity, CVSS 5.3. EPSS: 0.3% chance of exploitation in the next 30 days.

nptd-rs is a tool for synchronizing your computer's clock, implementing the NTP and NTS protocols. In versions between 1.2.0 and 1.6.1 inclusive servers which allow non-NTS traffic are affected by a denial of service vulnerability, where an attacker can induce a message storm between two NTP servers running ntpd-rs. Client-only configurations are not affected. Affected users are recommended to upgrade to version 1.6.2 as soon as possible.

Affected products

• Pendulum-Project Ntpd-RS: from 1.2.0, before 1.6.2 (fixed in 1.6.2)

Published 2025-08-29. Last modified 2026-06-17.