Description
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.
References (2)
Core 2
Core References
Vendor Advisory x_refsource_confirm
https://github.com/pendulum-project/ntpd-rs/security/advisories/GHSA-4855-q42w-5vr4
Scores
CVSS v3
5.3
EPSS
0.0012
EPSS Percentile
30.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-406
Status
published
Products (2)
crates.io/ntpd-rs
1.2.0 - 1.6.2crates.io
pendulum-project/ntpd-rs
>= 1.2.0, < 1.6.2
Published
Aug 29, 2025
Tracked Since
Feb 18, 2026