No exploitation reported

CVE-2019-1804

No exploitation reported by the sources we read.

Published2019-05-03
WeaknessCWE-1188 · CWE-310

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC

2019-05-0317:29CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2019-1804?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-1804?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Cisco nexus 93108tc-ex firmwareversion to verify

Branch	Affected	Fixed in	Source
14.0	= 14.0\(3d\)	no fix published	NVD

Cisco nexus 93120tx firmwareversion to verify

Branch	Affected	Fixed in	Source
14.0	= 14.0\(3d\)	no fix published	NVD

Cisco nexus 93128tx firmwareversion to verify

Branch	Affected	Fixed in	Source
14.0	= 14.0\(3d\)	no fix published	NVD

10 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

tools.cisco.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionnone2024-11-19
OpenCVESSVC decisionnone—
NVDCVSS 3.19.8read 2026-10-23
CNACVSS 3.09.8read 2026-10-23
NVDCVSS 2.010read 2026-10-23
CNAweakness (CWE)CWE-310read 2026-10-23
NVDweakness (CWE)CWE-1188read 2026-10-23
FIRST EPSSEPSS score3.5 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2019-05-03
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2019-1804?

Is CVE-2019-1804 actively exploited?

Active exploitation of CVE-2019-1804 has not been confirmed. Its EPSS score was 3.5% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-1804?

CVE-2019-1804 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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