CVE catalog
CVE-2016-7426
UBUNTU-CVE-2016-7426
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 12.37% · Oct 25, 2026
NTP before 4.2.8p9 rate limits responses received from the configured sources when rate limiting for all associations is enabled, which allows remote attackers to cause a denial of service (prevent responses from the sources) by sending responses with a spoofed source address.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | ntp | 11 | 1:4.2.8p9+dfsg-1 | fixed |
| Ubuntu | ntp | 14.04 | 1:4.2.6.p5+dfsg-3ubuntu2 | vulnerable |
| Ubuntu | ntp | 14.04 | 1:4.2.6.p5+dfsg-3ubuntu2.14.04.1 | vulnerable |
| Ubuntu | ntp | 14.04 | 1:4.2.6.p5+dfsg-3ubuntu2.14.04.2 | vulnerable |
| Ubuntu | ntp | 14.04 | 1:4.2.6.p5+dfsg-3ubuntu2.14.04.3 | vulnerable |
| Ubuntu | ntp | 14.04 | 1:4.2.6.p5+dfsg-3ubuntu2.14.04.5 | vulnerable |
| Ubuntu | ntp | 14.04 | 1:4.2.6.p5+dfsg-3ubuntu2.14.04.6 | vulnerable |
| Ubuntu | ntp | 14.04 | 1:4.2.6.p5+dfsg-3ubuntu2.14.04.7 | vulnerable |
| Ubuntu | ntp | 14.04 | 1:4.2.6.p5+dfsg-3ubuntu2.14.04.8 | vulnerable |
| Ubuntu | ntp | 14.04 | 1:4.2.6.p5+dfsg-3ubuntu2.14.04.10 | vulnerable |
| Ubuntu | ntp | 14.04 | 1:4.2.6.p5+dfsg-3ubuntu2.14.04.11 | fixed |
| Ubuntu | ntp | 16.04 | 1:4.2.6.p5+dfsg-3ubuntu8 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.6.p5+dfsg-3ubuntu8.1 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.6.p5+dfsg-3ubuntu9 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.8p4+dfsg-3ubuntu1 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.8p4+dfsg-3ubuntu2 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.8p4+dfsg-3ubuntu3 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.8p4+dfsg-3ubuntu4 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.8p4+dfsg-3ubuntu5 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.8p4+dfsg-3ubuntu5.1 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.8p4+dfsg-3ubuntu5.2 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.8p4+dfsg-3ubuntu5.3 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.8p4+dfsg-3ubuntu5.4 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.8p4+dfsg-3ubuntu5.5 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | ntp | deb | 11 | 1:4.2.8p9+dfsg-1 | Not reported | DEBIAN-CVE-2016-7426 | Not reported |
| Ubuntu | ntp | deb | 14.04 | 1:4.2.6.p5+dfsg-3ubuntu2.14.04.11 | Not reported | UBUNTU-CVE-2016-7426 | Not reported |
| Ubuntu | ntp | deb | 16.04 | 1:4.2.8p4+dfsg-3ubuntu5.5 | Not reported | UBUNTU-CVE-2016-7426 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://access.redhat.com/errata/RHSA-2017:0252]
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2017_0252.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2016-7426]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2016-7426]
[FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]