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CVE-2016-2774

Published: Mar 9, 2016Updated: May 6, 2026 Sources: CVE List NVDCWE-20
NVD MITRE
5.9CVSSMEDIUM
EPSS Score
73.7%
Top 0.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

ISC DHCP 4.1.x before 4.1-ESV-R13 and 4.2.x and 4.3.x before 4.3.4 does not restrict the number of concurrent TCP sessions, which allows remote attackers to cause a denial of service (INSIST assertion failure or request-processing outage) by establishing many sessions.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-20

Affected Products

n/an/a
dhcpiscNetworking Infrastructure
debian linuxdebian
On-premOS
Operating Systems / linux-distro
ubuntu linuxcanonical
On-premOS
Operating Systems / linux-distro
isccommercialUSNetworking Infrastructureaka internet systems consortium
debianoss-projectGBOperating Systemsaka debian gnu/linux
canonicalcommercialGBOperating Systemsaka canonical ltd.

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

http://rhn.redhat.com/errata/RHSA-2016-2590.html
rhn.redhat.com
http://www.securitytracker.com/id/1035196
securitytracker.com
https://kb.isc.org/article/AA-01354
kb.isc.org
and 7 more references View all →

Timeline

Published
Mar 9, 2016
Last Updated
May 6, 2026

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