CVE-2026-20286: Cisco Identity Services Engine Authorization Bypass Vulnerability
A vulnerability in the web-based management interface of Cisco Identify Services Engine (ISE) could allow an authenticated, remote attacker to modify parts of the configuration on an affected device. This vulnerability is due to the lack of server-side validation of Administrator permissions. An attacker could exploit this vulnerability by submitting a crafted HTTP request to an affected system. A successful exploit could allow the attacker to modify descriptions of files on a specific page. To exploit this vulnerability, an attacker would need valid Administrator credentials.
Affected Software
Event History
Frequently Asked Questions
Who can exploit this issue?
Exploitation requires a remote attacker to authenticate to the ISE web-based management interface with valid Administrator credentials. No user interaction is required.
What can an attacker change if exploitation succeeds?
A successful crafted HTTP request can allow modification of file descriptions on a specific page. The provided information does not indicate that the attacker can modify other configuration areas.
How can teams determine whether they may be exposed?
Assess whether Cisco Identity Services Engine is deployed with its web-based management interface reachable by potentially untrusted remote users, and review which accounts hold Administrator credentials. The issue applies to affected ISE systems, but the provided information does not identify affected releases.