CVE-2021-1277: Cisco Data Center Network Manager

Medium severity, CVSS 6.5. EPSS: 0.4% chance of exploitation in the next 30 days.

Multiple vulnerabilities in Cisco Data Center Network Manager (DCNM) could allow an attacker to spoof a trusted host or construct a man-in-the-middle attack to extract sensitive information or alter certain API requests. These vulnerabilities are due to insufficient certificate validation when establishing HTTPS requests with the affected device. For more information about these vulnerabilities, see the Details section of this advisory.

Affected products

• Cisco Data Center Network Manager: before 11.5\(1\) (fixed in 11.5\(1\))

Published 2021-01-20. Last modified 2026-06-17.