CVE-2026-20193: Cisco Identity Services Engine

Medium severity, CVSS 4.3. EPSS: 0.2% chance of exploitation in the next 30 days.

A vulnerability in the RADIUS Policy API endpoints of Cisco ISE could allow an authenticated, remote attacker with read-only Administrator privileges to gain unauthorized access to sensitive information on an affected device. This vulnerability is due to improper role-based access control (RBAC) permissions on the RADIUS Policy API endpoints. An attacker could exploit this vulnerability by bypassing the web-based management interface and directly calling an affected endpoint. A successful exploit could allow the attacker to gain unauthorized read access to sensitive RADIUS Policy details that are restricted for their role.

Affected products

• Cisco Identity Services Engine: up to and including 3.2.0; version 3.3.0 only; version 3.4.0 only; version 3.5.0 only

Published 2026-05-06. Last modified 2026-07-01.