CVE-2026-20155 HIGH

CVE-2026-20155: Cisco Evolved Programmable Network Manager Improper Authorization Vulnerability

Vendor Cisco
Product Cisco Evolved Programmable Network Manager (EPNM)
Weakness CWE-862 · Missing authorization
Published April 1, 2026
Last update April 1, 2026

CVSS base score

8.0/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction Required
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

A vulnerability in the web-based management interface of Cisco Evolved Programmable Network Manager (EPNM) could allow an authenticated, remote attacker with low privileges to access sensitive information that they are not authorized to access. This vulnerability is due to improper authorization checks on a REST API endpoint of an affected device. An attacker could exploit this vulnerability by querying the affected endpoint. A successful exploit could allow the attacker to view session information of active Cisco EPNM users, including users with administrative privileges, which could result in the affected device being compromised.

Key dates

02Disclosure timeline

April 1, 2026 CVE published
April 1, 2026 Record updated

Related vulnerabilities

04Related CVE