CVE-2026-20029

Cisco Identity Services Engine XML External Entity Processing Information Disclosure Vulnerability

Severity
Medium 4.9
CVSS 3.1
Exploited
Not listed
EPSS
0.056
92.2th percentile
Discovered by
Third party
Published by the vendor
Published
Jan 7, 2026
Assigned by cisco

Description

A vulnerability in the licensing features of Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) could allow an authenticated, remote attacker with administrative privileges to gain access to sensitive information.  This vulnerability is due to improper parsing of XML that is processed by the web-based management interface of Cisco ISE and Cisco ISE-PIC. An attacker could exploit this vulnerability by uploading a malicious file to the application. A successful exploit could allow the attacker to read arbitrary files from the underlying operating system that could include sensitive data that should otherwise be inaccessible even to administrators. To exploit this vulnerability, the attacker must have valid administrative credentials.

Weakness: CWE-611

Affected products

Vendor Product Category Matched by
Cisco Cisco Identity Services Engine (ISE) Identity / IAM / MFA cna-assigner
Vendor-reported affected versions (1)
  • Cisco · Cisco Identity Services Engine Software