CVE-2026-20047 Details
Description
A vulnerability in the web-based management interface of Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) 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.
A cross-site scripting (XSS) vulnerability has been identified in the web-based management interface of Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC). This vulnerability allows an authenticated, remote attacker to conduct XSS attacks against users of the interface. The issue arises from insufficient validation of user-supplied input, enabling attackers to inject malicious code into specific pages. Exploitation of this vulnerability could result in the execution of arbitrary script code in the context of the affected interface or access to sensitive, browser-based information. To exploit this vulnerability, an attacker must have valid administrative credentials.
Users are advised to upgrade to Cisco ISE versions 3.2 Patch 8, 3.3 Patch 8, or 3.4 Patch 4. For instructions on upgrading, see the Upgrade Guides on the Cisco Identity Service Engine support page.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jan 16, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-xss-964cdxW5 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-80 | Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| cisco identity services engine | < 3.2 3.2.0 - 3.2.0 patch1 3.2.0 patch2 3.2.0 patch3 3.2.0 patch4 3.2.0 patch5 3.2.0 patch6 3.2.0 patch7 3.3.0 3.3.0 - 3.3.0 patch1 3.3.0 patch2 3.3.0 patch3 3.3.0 patch4 3.3.0 patch5 3.3.0 patch6 3.3.0 patch7 3.4.0 - 3.4.0 patch1 3.4.0 patch2 3.4.0 patch3 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jan 30, 2026 | Initial Analysis | [email protected] |
| Jan 15, 2026 | New CVE Received | [email protected] |