CVE-2026-76446: Cisco Identity Services Engine

Medium severity, CVSS 4.9. EPSS: 0.3% chance of exploitation in the next 30 days.

A vulnerability in an API of Cisco ISE and Cisco ISE-PIC could allow an authenticated, remote attacker to read specific files on the underlying operating system of an affected device. This vulnerability is due to improper restriction of XML external entity references. An attacker could exploit this vulnerability by sending a crafted request to an affected device. A successful exploit could allow the attacker to read specific files on the affected system that the underlying process has permission to access.

Affected products

• Cisco Identity Services Engine: before 3.3.0 (fixed in 3.3.0); version 3.3.0 only; version 3.4.0 only; version 3.5.0 only
• Cisco Identity Services Engine Passive Identity Connector: before 3.3.0 (fixed in 3.3.0); version 3.3.0 only; version 3.4.0 only

Published 2026-09-16. Last modified 2026-09-28.