CVE-2018-7170

lowpriority · track · 22EPSS 0.027 · 86 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

2.69% (86th) EPSS

CVSS 3.5 · low

Is it mine?

20 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

ntpd in ntp 4.2.x before 4.2.8p7 and 4.3.x before 4.3.92 allows authenticated users that know the private symmetric key to create arbitrarily-many ephemeral associations in order to win the clock selection of ntpd and modify a victim's clock via a Sybil attack. This issue exists because of an incomplete fix for CVE-2016-1549.

cvss

Technical severity, 0–10. One row per scoring source.

5.3

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.5–5.3

v2.03.5lowAV:N/AC:M/Au:S/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 6.8 · impact 2.9

v3.15.3mediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:Nprimary · NVD / NIST USexploitability 1.6 · impact 3.6

v3.14.3mediumAV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:Nsecondary · FSTEC (BDU) RU

v3.14.9mediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-19USCWE-320US

affected products (20)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
Network Time Foundation NTP4.2 → 4.2.8p7 от 4.3 до 4.3.92fstec_bduRU
Network Time Foundation NTP4.2 → 4.2.8p7fstec_bduRU
Network Time Foundation NTP4.3 → 4.3.92fstec_bduRU
АО «Концерн ВНИИНС» ОС ОН «Стрелец»≤ 16.01.2023fstec_bduRU
ООО «РусБИТех-Астра» Astra Linux Special Edition≤ 1.6 «Смоленск»fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 8fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 9fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 10fstec_bduRU
hpe hpux-ntp< c.4.2.8.4.0nvdUScpe:2.3:a:hpe:hpux-ntp:*:*:*:*:*:*:*:*
netapp hciall versionsnvdUScpe:2.3:a:netapp:hci:*:*:*:*:*:*:*:*
netapp solidfireall versionsnvdUScpe:2.3:a:netapp:solidfire:*:*:*:*:*:*:*:*
ntp ntp4.2.0 → 4.2.8nvdUScpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:*
ntp ntp= 4.2.8nvdUScpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:*
ntp ntp4.3.0 → 4.3.92nvdUScpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:*
synology diskstation manager5.2 → 6.1.6-15266nvdUScpe:2.3:o:synology:diskstation_manager:*:*:*:*:*:*:*:*
synology router manager1.1 → 1.1.6-6931-3nvdUScpe:2.3:a:synology:router_manager:*:*:*:*:*:*:*:*
synology skynas< 6.1.5-15254nvdUScpe:2.3:a:synology:skynas:*:*:*:*:*:*:*:*
synology virtual diskstation manager< 6.1.6-15266nvdUScpe:2.3:a:synology:virtual_diskstation_manager:*:*:*:*:*:*:*:*
synology vs960hd firmware< 2.2.3-1505nvdUScpe:2.3:o:synology:vs960hd_firmware:*:*:*:*:*:*:*:*

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2018-03-06modified 2026-06-17

references (32)

External citations — patches, advisories, analysis.

scry

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