CVE-2019-1804

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

A vulnerability in the SSH key management for the Cisco Nexus 9000 Series Application Centric Infrastructure (ACI) Mode Switch Software could allow an unauthenticated, remote attacker to connect to the affected system with the privileges of the root user. The vulnerability is due to the presence of a default SSH key pair that is present in all devices. An attacker could exploit this vulnerability by opening an SSH connection via IPv6 to a targeted device using the extracted key materials. An exploit could allow the attacker to access the system with the privileges of the root user. This vulnerability is only exploitable over IPv6; IPv4 is not vulnerable.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-310CWE-1188

Affected software

No affected versions have been published.

Timeline

Published
May 3, 2019
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2019-1804: Critical severity, CVSS 9.8 | Vulnix