CVE-2021-34784: Cisco Evolved Programmable Network Manager

Medium severity, CVSS 5.4. EPSS: 0.6% chance of exploitation in the next 30 days.

A vulnerability in the web-based management interface of Cisco Prime Infrastructure (PI) and Cisco Evolved Programmable Network Manager (EPNM) could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against a user of the web-based management interface of an affected device. This vulnerability exists because the web-based management interface does not properly validate user-supplied input. An attacker could exploit this vulnerability by persuading a user of an affected interface to click a crafted link. 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 Evolved Programmable Network Manager: before 5.1.2 (fixed in 5.1.2)
• Cisco Prime Infrastructure: before 3.10 (fixed in 3.10)

Published 2021-11-04. Last modified 2026-06-17.