CVE-2022-20959: Cisco Identity Services Engine

Medium severity, CVSS 5.4. EPSS: 0.8% chance of exploitation in the next 30 days.

A vulnerability in the External RESTful Services (ERS) API of Cisco Identity Services Engine (ISE) Software could allow an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface of an affected device. This vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by persuading an authenticated administrator of the web-based management interface to click a malicious link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.

Affected products

• Cisco Identity Services Engine: from 2.4, before 2.7.0 (fixed in 2.7.0); version 2.7.0 only; version 3.0.0 only; version 3.1 only; version 3.2 only

Published 2022-10-26. Last modified 2026-06-17.