Lucene search
K
Catalog
Vendors
Products
Timeline
Vulnerabilities
Sources
Documentation
Blog
Glossary
FAQ
Brand assets
Assessment
Agents dashboard
Agent Scanning
API Scanning
Assessment API
Alerts
Email notifications
Webhook notifications
Alerts API
SBOM package analysis
API Reference
Support
Settings
Sign in

ntp: crypto-NAK preemptable association denial of service

🗓️ 03 Aug 2016 07:43:21Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 2 Views

Denial of service flaw in preemptable Network Time Protocol client associations allows disruption of time synchronization via spoofed cryptographic acknowledgments.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
IBM Security Bulletins		Security Bulletin: Multiple Security Vulnerabilities fixed in IBM Security Privileged Identity Manager
16 Jun 201821:45
–ibm
IBM Security Bulletins		Security Bulletin: Vulnerabilities in Ntp affect IBM Security Identity Governance
16 Jun 201821:44
–ibm
IBM Security Bulletins		Security Bulletin: Vulnerabilities in NTP affect Power Hardware Management Console
23 Sep 202101:31
–ibm
IBM Security Bulletins		Security Bulletin: Multiple vulnerabilities in ntp affect PowerKVM
18 Jun 201801:32
–ibm
IBM Security Bulletins		Security Bulletin: Multiple vulnerabilities in NTP affect IBM Security Network Protection
16 Jun 201821:43
–ibm
IBM Security Bulletins		Security Bulletin: IBM Flex System Manager (FSM) is affected by multiple ntp vulnerabilities
18 Jun 201801:32
–ibm
IBM Security Bulletins		Security Bulletin: IBM Security Access Manager for Mobile is affected by vulnerabilities in NTP
16 Jun 201821:45
–ibm
IBM Security Bulletins		Security Bulletin: Fixes for Multiple Security Vulnerabilities in IBM Security Identity Manager Virtual Appliance available
16 Jun 201821:45
–ibm
IBM Security Bulletins		Security Bulletin: Vulnerabilities in NTP affect IBM Flex System Chassis Management Module
31 Jan 201902:25
–ibm
IBM Security Bulletins		Security Bulletin: IBM Security Access Manager for Web is affected by vulnerabilities in NTP
16 Jun 201821:45
–ibm
Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux6.7ppc64ntp0:4.2.6p5-5.el6_7.5ntp-0:4.2.6p5-5.el6_7.5.ppc64.rpm
Red Hat Enterprise Linux6.7s390xntp0:4.2.6p5-5.el6_7.5ntp-0:4.2.6p5-5.el6_7.5.s390x.rpm
Red Hat Enterprise Linux6.7x86_64ntp0:4.2.6p5-5.el6_7.5ntp-0:4.2.6p5-5.el6_7.5.x86_64.rpm
Red Hat Enterprise Linux6.7anyntp0:4.2.6p5-5.el6_7.5.i686ntp-0:4.2.6p5-5.el6_7.5.i686.noarch.rpm
Red Hat Enterprise Linux6.7ppc64ntp-debuginfo0:4.2.6p5-5.el6_7.5ntp-debuginfo-0:4.2.6p5-5.el6_7.5.ppc64.rpm
Red Hat Enterprise Linux6.7s390xntp-debuginfo0:4.2.6p5-5.el6_7.5ntp-debuginfo-0:4.2.6p5-5.el6_7.5.s390x.rpm
Red Hat Enterprise Linux6.7x86_64ntp-debuginfo0:4.2.6p5-5.el6_7.5ntp-debuginfo-0:4.2.6p5-5.el6_7.5.x86_64.rpm
Red Hat Enterprise Linux6.7anyntp-debuginfo0:4.2.6p5-5.el6_7.5.i686ntp-debuginfo-0:4.2.6p5-5.el6_7.5.i686.noarch.rpm
Red Hat Enterprise Linux6.7anyntp-doc0:4.2.6p5-5.el6_7.5.noarchntp-doc-0:4.2.6p5-5.el6_7.5.noarch.noarch.rpm
Red Hat Enterprise Linux6.7ppc64ntp-perl0:4.2.6p5-5.el6_7.5ntp-perl-0:4.2.6p5-5.el6_7.5.ppc64.rpm
Rows per page

Data

Build on a solid foundation with Vulners data

We provide the essential building blocks for cybersecurity solutions with comprehensive, structured, and constantly updated vulnerability and exploits data

Api

Power your application with Vulners API

The Vulners REST API offers reliable, high-performance access to vulnerability intelligence, with 99.9% SLA uptime and CDN-backed data delivery for seamless global access

App

Assess and manage vulnerabilities with Vulners tools

Built on top of Vulners' database and SDK, end-user solutions give security professionals and developers lightweight and powerful tools for vulnerability remediation

Book a live demo
13 May 2026 01:23Current
7.1High risk
Vulners AI Score7.1
CVSS 25
CVSS 35.3
EPSS0.0511
network time protocolpreemptable client associationsspoofed cryptographic acknowledgmentstime synchronization
2