CVE-2026-20042: Cisco Nexus Dashboard

Medium severity, CVSS 6.5. EPSS: 0.3% chance of exploitation in the next 30 days.

A vulnerability in the configuration backup feature of Cisco Nexus Dashboard could allow an attacker who has the encryption password and access to Full or Config-only backup files to access sensitive information. This vulnerability exists because authentication details are included in the encrypted backup files. An attacker with a valid backup file and encryption password from an affected device could decrypt the backup file. The attacker could then use the authentication details in the backup file to access internal-only APIs on the affected device. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system as the root user.

Affected products

• Cisco Nexus Dashboard: before 4.2.1 (fixed in 4.2.1)

Published 2026-04-01. Last modified 2026-07-08.