Denial of Service Vulnerability in NTP Synchronization Tool by Pendulum
CVE-2025-58066

5.3MEDIUM

Key Information:

Vendor

Pendulum-project

Status
Ntpd-rs
Vendor
CVE Published:
29 August 2025

What is CVE-2025-58066?

The nptd-rs tool, responsible for synchronizing system clocks using NTP and NTS protocols, is susceptible to a denial of service vulnerability in versions 1.2.0 to 1.6.1. This issue arises when NTP servers allow non-NTS traffic, enabling an attacker to create a message storm between two servers running nptd-rs, potentially disrupting their operations. It's essential for those using affected versions to upgrade to version 1.6.2 promptly to mitigate these risks.

Affected Version(s)

ntpd-rs >= 1.2.0, < 1.6.2

References

https://github.com/pendulum-project/ntpd-rs/security/advi...
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https://github.com/pendulum-project/ntpd-rs/commit/da37cf...
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CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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CVE-2025-58066 : Denial of Service Vulnerability in NTP Synchronization Tool by Pendulum