# Ntp vulnerabilities

Source: https://junglewise.ai/threats/vendors/ntp  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/vendors/ntp.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 9 vulnerabilities in Ntp: 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2015-8140, was published on 30 January 2017. 1 technology has a page of its own.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 9 (0 critical, 0 exploited in the wild)

## About Ntp

NTP is a project that develops network time protocol software for synchronizing computer clocks over networks.

## Latest Ntp vulnerabilities

- [CVE-2015-8140: NTP ntpq protocol replay attack vulnerability](https://junglewise.ai/threats/cve-2015-8140-ntp-ntpq-protocol-replay-attack-vulnerability) (medium, CVSS 4.8, published 30 Jan 2017)
- [CVE-2015-8139: NTP ntpq origin timestamp leak and peer impersonation](https://junglewise.ai/threats/cve-2015-8139-ntp-ntpq-origin-timestamp-leak-and-peer-impersonation) (medium, CVSS 5.3, published 30 Jan 2017)
- [CVE-2016-1551: NTP and NTPsec reference clock impersonation vulnerability](https://junglewise.ai/threats/cve-2016-1551-ntp-and-ntpsec-reference-clock-impersonation-vulnerability) (low, CVSS 3.7, published 27 Jan 2017)
- [CVE-2016-9312: NTP Project ntpd denial of service via large UDP packet on Windows](https://junglewise.ai/threats/cve-2016-9312-ntp-project-ntpd-denial-of-service-via-large-udp-packet-on-windows) (high, CVSS 7.5, published 13 Jan 2017)
- [CVE-2016-9311: NTP Project ntpd denial of service in trap service](https://junglewise.ai/threats/cve-2016-9311-ntp-project-ntpd-denial-of-service-in-trap-service) (medium, CVSS 5.9, published 13 Jan 2017)
- [CVE-2016-9310: NTP ntpd information disclosure and DDoS vector in mode 6 control functionality](https://junglewise.ai/threats/cve-2016-9310-ntp-ntpd-information-disclosure-and-ddos-vector-in-mode-6-control) (medium, CVSS 6.5, published 13 Jan 2017)
- [CVE-2016-7433: NTP Project NTP denial of service in initial sync calculations](https://junglewise.ai/threats/cve-2016-7433-ntp-project-ntp-denial-of-service-in-initial-sync-calculations) (medium, CVSS 5.3, published 13 Jan 2017)
- [CVE-2016-7431: NTP Project ntpd origin timestamp protection bypass](https://junglewise.ai/threats/cve-2016-7431-ntp-project-ntpd-origin-timestamp-protection-bypass) (medium, CVSS 5.3, published 13 Jan 2017)
- [CVE-2016-7429: NTP Project ntp denial of service in interface selection](https://junglewise.ai/threats/cve-2016-7429-ntp-project-ntp-denial-of-service-in-interface-selection) (low, CVSS 3.7, published 13 Jan 2017)

## Most severe Ntp vulnerabilities

- [CVE-2016-9312: NTP Project ntpd denial of service via large UDP packet on Windows](https://junglewise.ai/threats/cve-2016-9312-ntp-project-ntpd-denial-of-service-via-large-udp-packet-on-windows) (high, CVSS 7.5, published 13 Jan 2017)
- [CVE-2016-9310: NTP ntpd information disclosure and DDoS vector in mode 6 control functionality](https://junglewise.ai/threats/cve-2016-9310-ntp-ntpd-information-disclosure-and-ddos-vector-in-mode-6-control) (medium, CVSS 6.5, published 13 Jan 2017)
- [CVE-2016-9311: NTP Project ntpd denial of service in trap service](https://junglewise.ai/threats/cve-2016-9311-ntp-project-ntpd-denial-of-service-in-trap-service) (medium, CVSS 5.9, published 13 Jan 2017)
- [CVE-2015-8139: NTP ntpq origin timestamp leak and peer impersonation](https://junglewise.ai/threats/cve-2015-8139-ntp-ntpq-origin-timestamp-leak-and-peer-impersonation) (medium, CVSS 5.3, published 30 Jan 2017)
- [CVE-2016-7433: NTP Project NTP denial of service in initial sync calculations](https://junglewise.ai/threats/cve-2016-7433-ntp-project-ntp-denial-of-service-in-initial-sync-calculations) (medium, CVSS 5.3, published 13 Jan 2017)
- [CVE-2016-7431: NTP Project ntpd origin timestamp protection bypass](https://junglewise.ai/threats/cve-2016-7431-ntp-project-ntpd-origin-timestamp-protection-bypass) (medium, CVSS 5.3, published 13 Jan 2017)
- [CVE-2015-8140: NTP ntpq protocol replay attack vulnerability](https://junglewise.ai/threats/cve-2015-8140-ntp-ntpq-protocol-replay-attack-vulnerability) (medium, CVSS 4.8, published 30 Jan 2017)
- [CVE-2016-1551: NTP and NTPsec reference clock impersonation vulnerability](https://junglewise.ai/threats/cve-2016-1551-ntp-and-ntpsec-reference-clock-impersonation-vulnerability) (low, CVSS 3.7, published 27 Jan 2017)
- [CVE-2016-7429: NTP Project ntp denial of service in interface selection](https://junglewise.ai/threats/cve-2016-7429-ntp-project-ntp-denial-of-service-in-interface-selection) (low, CVSS 3.7, published 13 Jan 2017)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Ntp technologies

- [Ntp](https://junglewise.ai/threats/technologies/ntp): 9 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Ntp vulnerabilities", https://junglewise.ai/threats/vendors/ntp, 9 November 2026.