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CVE-2018-0174

Published: Mar 28, 2018Updated: Jan 14, 2026 Sources: CVE List NVD BDU csafCWE-20
8.6HIGH
NVD MITRE
EPSS Score
7.7%
Top 5.8%
CISA KEV
Active Exploitation
Since Mar 3, 2022
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

A vulnerability in the DHCP option 82 encapsulation functionality of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability exists because the affected software performs incomplete input validation of option 82 information that it receives in DHCP Version 4 (DHCPv4) packets from DHCP relay agents. An attacker could exploit this vulnerability by sending a crafted DHCPv4 packet to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. Cisco Bug IDs: CSCuh91645.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:CC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-20

Affected Products

Cisco Systems Inc.
commercial·USaka cisco, cisco systems
Cisco IOSOn-premFirmware
Networking Infrastructure / router-switch
Cisco IOS XEOn-premFirmware
Networking Infrastructure / router-switch
and 3 more affected products View all →

Exploitability

CISA Known Exploited Vulnerability
Added to KEV:Mar 3, 2022
Remediation due:Mar 17, 2022

Required action: Apply updates per vendor instructions.

Official Patch Available
Is your org exposed to CVE-2018-0174?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

http://www.securityfocus.com/bid/103554
securityfocus.com
http://www.securitytracker.com/id/1040591
securitytracker.com
https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04
ics-cert.us-cert.gov
and 22 more references View all →

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