Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2016-7427

15
FAUCET Score

CVE-2016-7427 describes a denial-of-service vulnerability in the Network Time Protocol daemon (ntpd) versions prior to 4.2.8p9. This flaw, rated Medium severity (CVSS 4.3), allows a remote attacker on the same network segment to prevent the processing of legitimate broadcast mode NTP packets by sending a specially crafted packet, impacting the availability of time synchronization services. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
4.2.8CPE matchmatch criteria
cpe:2.3:a:ntp:ntp:4.2.8:p6:*:*:*:*:*:*
4.2.8CPE matchmatch criteria
cpe:2.3:a:ntp:ntp:4.2.8:p7:*:*:*:*:*:*
4.2.8CPE matchmatch criteria
cpe:2.3:a:ntp:ntp:4.2.8:p8:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.3MEDIUM

CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.94%
Probability of exploitation in next 30 days
EPSS Percentile
89.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0394 is in the 98th percentile among its peer group of 1,802 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2016-7427Moderate

ntp: Broadcast Mode Replay Prevention DoS

Nov 21, 2016

References

nwtime.org / ntp428p9_release
Release NotesVendor Advisory
bto.bluecoat.com / security-advisory/sa139
h20566.www2.hpe.com / hpsc/doc/public/display
security.freebsd.org / advisories/FreeBSD-SA-16:39.ntp.asc
support.hpe.com / hpsc/doc/public/display
support.hpe.com / hpsc/doc/public/display
support.ntp.org / bin/view/Main/NtpBug3114
Issue TrackingMitigationVendor Advisory
support.ntp.org / bin/view/Main/SecurityNotice
Vendor Advisory
usn.ubuntu.com / 3707-2
kb.cert.org / vuls/id/633847
Third Party AdvisoryUS Government Resource
securityfocus.com / bid/94447
Third Party AdvisoryVDB Entry
securitytracker.com / id/1037354