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A malicious authenticated peer can create arbitrarily-many ephemeral associations in order to win the clock selection algorithm in ntpd in NTP 4.2.8p4 and earlier and NTPsec 3e160db8dc248a0bcb053b56a80167dc742d2b74 and a5fb34b9cc89b92a8fef2f459004865c93bb7f92 and modify a victim's clock.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux | — | Upgrade ntp | May 11, 2018 | Jan 6, 2017 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Jan 6, 2017 |
| Cisco Apic | — | Upgrade to the latest version of Cisco APIC to resolve this vulnerability. | May 11, 2026 | Apr 28, 2016 |
| Debian | — | Upgrade ntp | Jul 30, 2024 | Jan 6, 2017 |
| F5 Big Ip | — | Update F5 BIG-IP to the latest version | Jun 17, 2026 | Jun 13, 2016 |
| Freebsd | — | Upgrade FreeBSDUpgrade ntpUpgrade ntp-devel | Jan 6, 2017 | Apr 27, 2016 |
| Gentoo Linux | — | Upgrade net-misc/ntp. | Oct 30, 2017 | Jan 6, 2017 |
| Hpux | — | Update NTP to the latest version | Dec 9, 2019 | Jan 6, 2017 |
| Ibm Aix | — | Apply the fix or workaround for ntp_advisory10 | Aug 16, 2018 | Jan 6, 2017 |
| Ntp | — | Upgrade to the latest version of NTP | Feb 23, 2023 | Jan 6, 2017 |
| Oracle Solaris | — | Upgrade service/network/ntp to version 4.2.8.8-0.175.3.12.0.1.0 on Solaris 11.3Upgrade service/network/ntp to version 4.2.8.12-11.4.8.0.1.3.0 on Solaris 11.4 | May 29, 2017 | Jan 6, 2017 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Apr 26, 2016 |
| Suse | — | Upgrade ntp-docUpgrade ntp | May 11, 2016 | May 11, 2016 |
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