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CVE-2018-0156Cisco IOS Software and Cisco IOS XE Software Smart Install Denial-of-Service Vulnerability
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.
7.5 HIGHEPSS 9.36%⚡ Known Exploited (CISA KEV)NVD: Analyzed
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 7.5 | HIGH | 3.1NVD | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 7.8 | HIGH | 2.0NVD | AV:N/AC:L/Au:N/C:N/I:N/A:C |
CISA required action
⚡ Known exploited · remediation due Mar 17, 2022
Apply updates per vendor instructions.
Details
- CVE ID
- CVE-2018-0156
- Status
- Analyzed
- Assigner (CNA)
- cisco
- Published
- Mar 28, 2018
- Last modified
- 2026-06-17 01:29 UTC
Affected Products
As published by the CNA in the CVE record.
Cisco IOS and IOS XE1 version range
- Cisco IOS and IOS XE
References
- securityfocus.com http://www.securityfocus.com/bid/103569
- securitytracker.com http://www.securitytracker.com/id/1040596
- ics-cert.us-cert.gov https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04
- ics-cert.us-cert.gov https://ics-cert.us-cert.gov/advisories/ICSA-18-107-05
- tools.cisco.com https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-smi
- cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0156