LOW
CVE-2016-7429
CWE-18Published: January 13, 2017· Updated: Jun 17, 2026
3.7
CVSS v3.1
Official Description
NTP before 4.2.8p9 changes the peer structure to the interface it receives the response from a source, which allows remote attackers to cause a denial of service (prevent communication with a source) by sending a response for a source to an interface the source does not use.
Technical Analysis
CVE-2016-7429 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityLow
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Affected Vendors & Products
ntp1 product(s)
ntp
Source: NVD CPE · 1 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (20)
→
http://nwtime.org/ntp428p9_release/Release Notes · Vendor Advisory
→
http://support.ntp.org/bin/view/Main/NtpBug3072Issue Tracking · Mitigation · Vendor Advisory
→
https://www.kb.cert.org/vuls/id/633847Third Party Advisory · US Government Resource
→
http://nwtime.org/ntp428p9_release/Release Notes · Vendor Advisory
→
http://support.ntp.org/bin/view/Main/NtpBug3072Issue Tracking · Mitigation · Vendor Advisory
Quick Facts
CVE IDCVE-2016-7429
CVSS Score3.7 / 10
SeverityLOW
WeaknessCWE-18
CISA KEVNo
Affected1 vendor(s)
PublishedJan 13, 2017
Related CVEs (CWE-18)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2016-7429 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.