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CVE-2015-7704

The ntpd client in NTP 4.x before 4.2.8p4 and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service via a number of crafted "KOD" messages.

Published: Aug 7, 2017Updated: May 13, 2026 Sources: CVE List NVD csafCWE-20
NVD MITRE
7.5CVSSHIGH
EPSS Score
10.9%
Top 4.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

This CSAF advisory was extracted from unstructured data and may contain inaccuracies. If you notice any errors, please reach out to the designated contact at CISA CSAF: central@cisa.dhs.gov

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-20

Affected Products

ntpntp
On-prem
Networking Infrastructure / dns-dhcp-ntp
debian linuxdebian
On-premOS
Operating Systems / linux-distro
oncommand performance managernetappHardware Firmware
oncommand unified managernetappHardware Firmware
clustered data ontapnetappHardware Firmware
ntposs-projectNetworking Infrastructureaka ntp daemon
debianoss-projectGBOperating Systemsaka debian gnu/linux
netappcommercialUSHardware Firmware
and 10 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2015/icsa-15-356-01.json
raw.githubusercontent.com
https://www.cisa.gov/news-events/ics-advisories/icsa-15-356-01
cisa.gov
https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01
cisa.gov
and 27 more references View all →

Timeline

Published
Aug 7, 2017
Last Updated
May 13, 2026

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