The rate limiting feature in NTP 4.x before 4.2.8p4 and 4.3.x before 4.3.77 allows remote attackers to have unspecified impact via a large number of crafted requests.
CVSS Details
- CVSS 3.1 Base Score: 9.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Cisco Apic | — | Upgrade to the latest version of Cisco APIC to resolve this vulnerability. | May 11, 2026 | Oct 21, 2015 |
| Cisco Ise | — | — | Oct 21, 2025 | Oct 21, 2015 |
| Debian | — | Upgrade ntp | Jul 30, 2024 | Aug 7, 2017 |
| F5 Big Ip | — | Update F5 BIG-IP to the latest version | Jun 17, 2026 | Nov 5, 2015 |
| Freebsd | — | Upgrade FreeBSDUpgrade ntp-develUpgrade ntp | Dec 10, 2025 | Oct 21, 2015 |
| Gentoo Linux | — | Upgrade net-misc/ntp. | Oct 30, 2017 | Aug 7, 2017 |
| Huawei Euleros 2_0_sp2 | — | Upgrade ntpUpgrade ntpdate | Jul 23, 2019 | Aug 7, 2017 |
| Huawei Euleros 2_0_sp3 | — | Upgrade ntpdateUpgrade ntpUpgrade sntp | Sep 25, 2019 | Aug 7, 2017 |
| Huawei Euleros 2_0_sp5 | — | Upgrade sntpUpgrade ntpdateUpgrade ntp | May 1, 2019 | Aug 7, 2017 |
| Ntp | — | Upgrade NTP to version 4.2.8Upgrade NTP to version 4.3.77 | Feb 23, 2023 | Aug 7, 2017 |
| Oracle Solaris | — | Upgrade service/network/ntp to version 4.2.8.6-0.175.3.6.0.1.0 on Solaris 11.3 | May 29, 2017 | May 29, 2017 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Oct 21, 2015 |
| Suse | — | Upgrade ntp-docUpgrade ntpUpgrade yast2-ntp-clientUpgrade yast2-ntp-client-devel-docUpgrade ntp-debugsourceUpgrade ntp-debuginfo | Dec 18, 2015 | Oct 27, 2015 |
| Ubuntu | — | Upgrade ntp | Nov 9, 2015 | Oct 27, 2015 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub