CVE-2016-4953
7.5
HIGH
CVSS 3.1
EPSS 12.7%
Description
ntpd in NTP 4.x before 4.2.8p8 allows remote attackers to cause a denial of service (ephemeral-association demobilization) by sending a spoofed crypto-NAK packet with incorrect authentication data at a certain time.
How to fix CVE-2016-4953
To remediate CVE-2016-4953, upgrade the affected package to a fixed version below.
- Debian/ntp—upgrade to 1:4.2.8p8+dfsg-1 or later
Is CVE-2016-4953 being exploited?
Moderate — EPSS is 12.7%. Track this CVE but it's not at the top of the prioritisation list.
Affected packages (1)
- from 0, < 1:4.2.8p8+dfsg-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |