synced 2 MIN AGO
01 Record

CVE-2016-1551

ntpd in NTP 4.2.8p3 and NTPsec a5fb34b9cc89b92a8fef2f459004865c93bb7f92 relies on the underlying operating system to protect it from requests that impersonate reference clocks. Because reference

UnratedPUBLISHEDCNA: certcc
CNA base scoreUnratedNo CNA CVSS vector
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02 Description

ntpd in NTP 4.2.8p3 and NTPsec a5fb34b9cc89b92a8fef2f459004865c93bb7f92 relies on the underlying operating system to protect it from requests that impersonate reference clocks. Because reference

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
2.23% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 82.5% of scored records. A rank, not a probability.
NVD base score
3.7 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Low. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2017-01-27 17:00Z9 YR AGO
Last updated
2024-08-05 23:02Z2 YR AGO
Reserved
2016-01-07
Assigning CNA
certcc
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
Data version
5.1
Document digest
eaffaed4db9ae217465327548bb86bacaabdc93818d35c8c31e7f82054996c87

05 Affected products

VendorProductVersionsPlatforms
NTP ProjectNTP4.2.8p3, 4.2.8p4—
NTPsec ProjectNTPSec3e160db8dc248a0bcb053b56a80167dc742d2b74, a5fb34b9cc89b92a8fef2f459004865c93bb7f92—

06 References