CVE-2026-20076
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2026-01-15

Last updated on: 2026-01-15

Assigner: Cisco Systems, Inc.

Description
A vulnerability in the web-based management interface of Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack 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.
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Meta Information
Published
2026-01-15
Last Modified
2026-01-15
Generated
2026-06-16
AI Q&A
2026-01-16
EPSS Evaluated
2026-06-14
NVD
CVE-2026-20076
EUVD
EUVD-2026-2748
Affected Vendors & Products
Showing 4 associated CPEs
Vendor Product Version / Range
cisco identity_services_engine to 3.2_patch_8 (exc)
cisco identity_services_engine 3.2_patch_8
cisco identity_services_engine 3.3_patch_5
cisco identity_services_engine 3.4_patch_1
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
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Executive Summary

This vulnerability is a stored cross-site scripting (XSS) flaw in the web-based management interface of Cisco Identity Services Engine (ISE). An authenticated remote attacker with valid administrative credentials can inject malicious script code into specific pages of the interface due to insufficient validation of user-supplied input. Successful exploitation allows the attacker to execute arbitrary scripts in the context of the affected interface or access sensitive browser-based information. [1]

Impact Analysis

If exploited, this vulnerability could allow an attacker with administrative access to execute arbitrary scripts within the web interface, potentially leading to unauthorized access to sensitive browser-based information or manipulation of the interface. This could compromise the security and integrity of the management system, although the impact on confidentiality and integrity is considered low and there is no impact on availability. [1]

Mitigation Strategies

To mitigate this vulnerability, you should upgrade Cisco Identity Services Engine (ISE) to one of the fixed software releases: 3.2 Patch 8, 3.3 Patch 5, or 3.4 Patch 1. Cisco ISE 3.5 is not vulnerable. There are no workarounds available, so upgrading to a fixed release is strongly recommended. Additionally, ensure you consult upgrade guides and verify hardware/software compatibility before upgrading. If you do not have a service contract, contact Cisco TAC for assistance. [1]

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