Auth bypass in Cisco Evolved Programmable Network Manager (Epnm)
CVE-2026-20155
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.
Vulnerability class: Broken Access Control
EPSS: 0.003 (18.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Cisco Evolved Programmable Network Manager (Epnm) — versions 7.1.1, 7.1.2.1, 7.1.3
- Cisco Evolved_programmable_network_manager
Weakness classification (CWE)
References
- psirt@cisco.com (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-20155?
- CVE-2026-20155 is a high-severity vulnerability in Cisco Evolved Programmable Network Manager (Epnm), classified under Missing Authorization. CVSS score: 8.0/10. Published 2026-04-01.
- How severe is CVE-2026-20155?
- High severity. CVSS v3 base score is 8.0 out of 10.