CVE-2026-20123: Cisco Evolved Programmable Network Manager

Medium severity, CVSS 6.1. EPSS: 0.2% chance of exploitation in the next 30 days.

A vulnerability in the web-based management interface of Cisco Evolved Programmable Network Manager (EPNM) and Cisco Prime Infrastructure could allow an unauthenticated, remote attacker to redirect a user to a malicious web page. This vulnerability is due to improper input validation of the parameters in the HTTP request. An attacker could exploit this vulnerability by intercepting and modifying an HTTP request from a user. A successful exploit could allow the attacker to redirect the user to a malicious web page.

Affected products

• Cisco Evolved Programmable Network Manager: before 8.1.1 (fixed in 8.1.1)
• Cisco Prime Infrastructure: before 3.10.6 (fixed in 3.10.6); version 3.10.6 only

Published 2026-02-04. Last modified 2026-06-29.