Review reviewHigh

CVE-2026-20155

Cisco Cisco Evolved Programmable Network Manager (EPNM), evolved programmable network manager

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...

CVSS: 8
EPSS: 0.27%
CISA KEV: Not listed
Published: 2026.04.02

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.27%

Technical severityCVSS 8

Vulnerability overview

Affected product and versions

Product: Cisco Cisco Evolved Programmable Network Manager (EPNM), evolved programmable network manager
Affected versions: 7.1.1, 7.1.2.1, 7.1.3, 7.1.2, 7.1.0, 8.0.0, 8.0.0.1, 7.1.3.1, 7.1.4, 8.1.0, 8.1.1, 8.0.1, 7.1.4.1, 8.0.1.1, < 8.1.2
Fixed versions: 8.1.2

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that Cisco Cisco Evolved Programmable Network Manager (EPNM), evolved programmable network manager and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
CWE: CWE-862