CVE-2020-3439: Cisco Data Center Network Manager

Medium severity, CVSS 4.8. EPSS: 0.6% chance of exploitation in the next 30 days.

A vulnerability in the web-based management interface of Cisco Data Center Network Manager (DCNM) Software could allow an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. The vulnerability is due to insufficient input validation by the web-based management interface. An attacker could exploit this vulnerability by inserting malicious data into a specific data field in the interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.

Affected products

• Cisco Data Center Network Manager: before 11.4\(1\) (fixed in 11.4\(1\))

Published 2020-08-26. Last modified 2026-06-17.