The nextvar function in NTP before 4.2.8p6 and 4.3.x before 4.3.90 does not properly validate the length of its input, which allows an attacker to cause a denial of service (application crash).
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Cisco Apic | — | Upgrade to the latest version of Cisco APIC to resolve this vulnerability. | May 11, 2026 | Jan 27, 2016 |
| Cisco Ise | — | — | Oct 21, 2025 | Jan 27, 2016 |
| Cisco Xe | — | Upgrade to the latest version of Cisco IOS XE | Jul 30, 2019 | Jan 30, 2017 |
| Cisco Xr Os | — | Upgrade to the latest version of Cisco IOS-XR to resolve this vulnerability. | May 19, 2021 | Jan 27, 2016 |
| Debian | — | Upgrade ntp | Jul 30, 2024 | Jan 30, 2017 |
| Freebsd | — | Upgrade ntpUpgrade ntp-develUpgrade FreeBSD | Dec 10, 2025 | Jan 21, 2016 |
| Gentoo Linux | — | Upgrade net-misc/ntp. | Oct 30, 2017 | Jan 30, 2017 |
| Ntp | — | Upgrade to the latest version of NTP | Feb 23, 2023 | Jan 30, 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 | Jan 30, 2017 |
| Panos | — | Update PAN-OS 7.1 to the latest workaround for your deviceUpdate PAN-OS 6.0 to the latest workaround for your deviceUpdate PAN-OS 6.1 to the latest workaround for your deviceUpdate PAN-OS 5.0 to the latest workaround for your deviceUpdate PAN-OS 5.1 to the latest workaround for your deviceUpgrade PAN-OS 7.0 to the latest version | Oct 11, 2016 | Apr 28, 2016 |
| Suse | — | Upgrade yast2-ntp-client-devel-docUpgrade ntp-docUpgrade ntpUpgrade yast2-ntp-client | Apr 28, 2016 | Apr 28, 2016 |
| Ubuntu | — | Upgrade ntp | Oct 7, 2016 | Apr 28, 2016 |
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