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Advisory severityHigh8.0Cisco

High [CVE-2026-20155] Cisco Evolved Programmable Network Manager Improper Authorization Vulnerability

This high-severity Cisco advisory covers CVE-2026-20155; related products: Evolved Programmable Network Manager (EPNM).

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

cisco-sa-epnm-improp-auth-mUwFWUU3 Source published Source updated

VulniPulse record published Record updated

CVE-2026-20155
Related products & platforms
CiscoUnclassified
Open source advisory

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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 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.

Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

Affected versions
  • Scope: This vulnerability affects Cisco EPNM, regardless of device configuration.
  • 8.0 and earlier — Migrate to a fixed release
  • Release 8.1 (first fixed: 8.1.2)

Official advisory · high-confidence parse· fetched 3 months ago·verify at source

Fixed versions
  • 8.1.2

Official advisory · high-confidence parse· fetched 3 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • Upgrade to the first fixed release for your train per the Fixed Releases table in this advisory.
  • Release 8.0 and earlier: migrate to a fixed release.
  • Release 8.1: upgrade to 8.1.2.
Workaround status
  • There are no workarounds that address this vulnerability.

Official advisory · high-confidence parse· fetched 3 months ago·verify at source

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