Unlimited number of NTS-KE connections can crash ntpd-rs server
Priority MEDIUM 40CWE-770Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-770.
Summary
nptd-rs is a tool for synchronizing your computer's clock, implementing the NTP and NTS protocols. There is a missing limit for accepted NTS-KE connections. This allows an unauthenticated remote attacker to crash ntpd-rs when an NTS-KE server is configured. Non NTS-KE server configurations, such as the default ntpd-rs configuration, are unaffected. This vulnerability has been patched in version 1.1.3.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00717 54th percentileScored 2026-11-07
Fix Fixed ntpd (crates.io): 1.1.3
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| pendulum-project | ntpd-rs | 0.3.1 – 1.1.2 | — | No fix listed | CNA |
| — | ntpd (crates.io) | 0.3.1 to before 1.1.3 | 1.1.3 | Patch available | GHSA-2xpx-vcmq-5f72 |
- ntpd-rs Vendorpendulum-project Affected 0.3.1 – 1.1.2 Fixed in — No fix listed CNA
- ntpd (crates.io) Vendor— Affected 0.3.1 to before 1.1.3 Fixed in 1.1.3 Patch available GHSA-2xpx-vcmq-5f72
CPE names CISA-ADP · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:tweedegolf:ntpd-rs:0.3.1:*:*:*:*:rust:*:* | 0.3.1 | — | Tweedegolf |
- cpe:2.3:a:tweedegolf:ntpd-rs:0.3.1:*:*:*:*:rust:*:* Versions 0.3.1 — ·Tweedegolf
Remediation
- Fix · GHSA-2xpx-vcmq-5f72 ntpd (crates.io) Fixed in 1.1.3 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2024-38528
- 2026-10-03 Alias added: GHSA-2xpx-vcmq-5f72
References
More pendulum-project vulnerabilities
- TI-2025-35909 DoS Vulnerability in ntpd-rs CVSS 3.1MEDIUM 5.3
Sources
- CVE-2024-38528 · CVE Program
- CVE-2024-38528 · NVD
- FIRST EPSS
- GHSA-2xpx-vcmq-5f72 · GitHub Advisory Database · CC BY 4.0
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