CVE-2018-0174

Published: Mar 28, 2018Updated: Jan 14, 2026 Sources: CVE List NVD BDU csafCWE-20

8.6HIGH

NVD MITRE

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

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?Request an assessment to establish which checks are appropriate for your systems. Check my exposure

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Initial Access

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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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