---
id: CVE-2026-20155
title: >-
  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 …
summary: >-
  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 …
severity: high
cvss: 8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-862
vendor: cisco
product: evolved_programmable_network_manager
affected:
  - evolved_programmable_network_manager < 8.1.2
patched:
  - evolved_programmable_network_manager 8.1.2
published: '2026-04-01'
updated: '2026-07-02'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-20155'
references:
  - url: >-
      https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-epnm-improp-auth-mUwFWUU3
    label: psirt@cisco.com
tags:
  - nvd
epss: 0.0027
epssPercentile: 0.16998
ingestedAt: '2026-07-02T18:41:45.672Z'
---

## Overview

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.&nbsp;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.

## Affected

- `evolved_programmable_network_manager < 8.1.2`

## Remediation

Upgrade past the affected range:

- `evolved_programmable_network_manager 8.1.2`