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CVE-2018-0156

Published: Mar 28, 2018Updated: Jan 13, 2026 Sources: CVE List NVD BDU csafCWE-399
7.5HIGH
NVD MITRE
EPSS Score
8.2%
Top 5.4%
CISA KEV
Active Exploitation
Since Mar 3, 2022
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

A vulnerability in the Smart Install feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to improper validation of packet data. An attacker could exploit this vulnerability by sending a crafted packet to an affected device on TCP port 4786. Only Smart Install client switches are affected. Cisco devices that are configured as a Smart Install director are not affected by this vulnerability. Cisco Bug IDs: CSCvd40673.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
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-399CWE-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-2018-0156?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

https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04
ics-cert.us-cert.gov
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-smi
tools.cisco.com
http://www.securitytracker.com/id/1040596
securitytracker.com
and 22 more references View all →

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