CVE-2025-20163

A vulnerability in the SSH implementation of Cisco Nexus Dashboard Fabric Controller (NDFC) could allow an unauthenticated, remote attacker to impersonate Cisco NDFC-managed devices. This vulnerability is due to insufficient SSH host key validation. An attacker could exploit this vulnerability by performing a machine-in-the-middle attack on SSH connections to Cisco NDFC-managed devices, which could allow an attacker to intercept this traffic. A successful exploit could allow the attacker to impersonate a managed device and capture user credentials.

Scoring

Severity

HIGH

CVSS base score

8.7

CVSS vector

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

EPSS probability

0.43%

CWE

CWE-322

Published

2025-06-04

Last modified

2026-03-12

Affected products

• Cisco Cisco Data Center Network Manager
• Cisco Cisco Data Center Network Manager
• Cisco Cisco Data Center Network Manager
• Cisco Cisco Data Center Network Manager
• Cisco Cisco Data Center Network Manager
• Cisco Cisco Data Center Network Manager
• Cisco Cisco Data Center Network Manager
• Cisco Cisco Data Center Network Manager

Weakness type

• CWE-322

Related vulnerabilities

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• CVE-2026-45361 — Apache Airflow Google provider: SSH host key verification disabled in ComputeEngineSSHHook (paramiko AutoAddPolicy default)
• CVE-2026-44467 — Claude Desktop: SSH Host Key Verification Bypass Allows Man-in-the-Middle Attack on Remote Sessions
• CVE-2026-1354 — Zero Motorcycles Firmware Key Exchange without Entity Authentication
• CVE-2025-13914 — Apstra: SSH host key validation vulnerability for managed devices
• CVE-2026-33697 — CoCoS attested TLS is vulnerable to relay attacks via extracted ephemeral TLS keys
• CVE-2026-1709 — Keylime: keylime: authentication bypass allows unauthorized administrative operations due to missing client-side tls authentication

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