CVE-2025-20267 - Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

Severity

48%

Complexity

17%

Confidentiality

45%

A vulnerability in the web-based management interface of Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to conduct cross-site scripting (XSS) attacks against a user of the interface. This vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of an affected system. An attacker could exploit this vulnerability by injecting malicious code into specific pages of the interface. 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. To exploit this vulnerability, the attacker must have valid administrative credentials.

CVSS 3.1 Base Score 4.8. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N).

Demo Examples

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

CWE-80

In the following example, a guestbook comment isn't properly encoded, filtered, or otherwise neutralized for script-related tags before being displayed in a client browser.


               
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Overview

First reported 2 months ago

2025-05-21 17:15:00

Last updated 4 days ago

2025-07-22 16:41:00

Affected Software

Cisco Identity Services Engine (ISE)

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