CVE-2018-0156

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    CVE-2018-0156

    Published: 28 Mar 2018Last Modified: 10 Mar 2026

    Summary:

    Details: 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.

    References: , https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0156, http://www.securityfocus.com/bid/103569, http://www.securitytracker.com/id/1040596, https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04, https://ics-cert.us-cert.gov/advisories/ICSA-18-107-05, https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-smi

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High