MEDIUM
CVE-2016-7428
CWE-400Published: January 13, 2017· Updated: Jun 17, 2026
4.3
CVSS v3.1
Official Description
ntpd in NTP before 4.2.8p9 allows remote attackers to cause a denial of service (reject broadcast mode packets) via the poll interval in a broadcast packet.
Technical Analysis
CVE-2016-7428 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.
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 VectorAdjacent
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityLow
CVSS:3.0/AV:A/AC:L/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 (24)
→
http://nwtime.org/ntp428p9_release/Release Notes · Vendor Advisory
→
http://support.ntp.org/bin/view/Main/NtpBug3113Issue Tracking · Mitigation · Vendor Advisory
→
http://www.securityfocus.com/bid/94446Third Party Advisory · VDB Entry
→
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/NtpBug3113Issue Tracking · Mitigation · Vendor Advisory
Quick Facts
CVE IDCVE-2016-7428
CVSS Score4.3 / 10
SeverityMEDIUM
WeaknessCWE-400
CISA KEVNo
Affected1 vendor(s)
PublishedJan 13, 2017
Related CVEs (CWE-400)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2016-7428 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.