ntpq in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service (crash) via crafted mode 6 response packets.
| 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 | Nov 9, 2015 | Oct 27, 2015 |
| F5 Big Ip | — | Update F5 BIG-IP to the latest version | Jun 17, 2026 | Nov 6, 2015 |
| Freebsd | — | Upgrade ntp-develUpgrade ntpUpgrade FreeBSD | Dec 10, 2025 | Oct 21, 2015 |
| Gentoo Linux | — | Upgrade net-misc/ntp. | Oct 30, 2017 | Aug 7, 2017 |
| Huawei Euleros 2_0_sp1 | — | Upgrade ntpUpgrade ntpdate | Nov 30, 2017 | Aug 7, 2017 |
| Ntp | — | Upgrade NTP to version 4.3.77Upgrade NTP to version 4.2.8 | 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 |
| Oracle_linux | — | Upgrade ntp-perlUpgrade ntpUpgrade ntpdateUpgrade sntpUpgrade ntp-doc | Aug 7, 2017 | Aug 7, 2017 |
| Redhat_linux | — | Upgrade ntp-perlUpgrade ntpUpgrade ntp-docNo solution existsUpgrade sntpUpgrade ntpdateUpgrade ntp-debuginfo | Jul 1, 2017 | Oct 27, 2015 |
| Suse | — | Upgrade ntp-debuginfoUpgrade ntp-debugsourceUpgrade yast2-ntp-client-devel-docUpgrade ntp-docUpgrade yast2-ntp-clientUpgrade ntp | Dec 18, 2015 | Oct 27, 2015 |
| Ubuntu | — | Upgrade ntp | Nov 9, 2015 | Oct 27, 2015 |
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