CVE-2019-1804

9.8 CRITICAL 3% exploit odds Fix listed Crypto Network gear

What it is

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.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.
Exploit odds: 3.5% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2019-05-03 17:29 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 02:29 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 3.5% in the next 30 days (EPSS).
Severity: 9.8 CRITICAL (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2019-05-03 17:29 UTC
Last modified: 2026-06-17 02:29 UTC
Exploit probability: 3.5% · EPSS, next 30 days
Weakness: CWE-310
Record status: Modified

Affected

Cisco Nexus 9332pq Firmware 14.0\(3d\)
Cisco Nexus 93180yc-ex Firmware 14.0\(3d\)
Cisco Nexus 93128tx Firmware 14.0\(3d\)
Cisco Nexus 93120tx Firmware 14.0\(3d\)
Cisco Nexus 93108tc-ex Firmware 14.0\(3d\)
Cisco Nexus 9516 Firmware 14.0\(3d\)
Cisco Nexus 9508 Firmware 14.0\(3d\)
Cisco Nexus 9504 Firmware 14.0\(3d\)

Attack profile CVSS 3.1 · 9.8

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

Raw vector

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

Is it in your code?

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Fix and advisories

References

NVD record · CVE.org record