CVE-2026-20193 MEDIUM

CVE-2026-20193: Cisco Identity Services Engine Authentication Bypass Vulnerability

Vendor Cisco
Product Cisco Identity Services Engine Software
Weakness CWE-862 · Missing authorization
Published May 6, 2026
Last update May 6, 2026

CVSS base score

4.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality Low
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

May 6, 2026 CVE published
May 6, 2026 Record updated

Related vulnerabilities

04Related CVE