CVE-2026-76460: Cisco Identity Services Engine Incorrect Use of Privileged APIs Vulnerability

Critical severity, CVSS 10.0. Actively exploited: in CISA KEV since 2026-09-16. EPSS: 14% chance of exploitation in the next 30 days.

A vulnerability in an API of Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to bypass authentication. This vulnerability is due to insufficient authentication control on an API endpoint. An attacker could exploit this vulnerability by sending a crafted request to an affected API endpoint. A successful exploit could allow the attacker to gain unauthorized access to the affected device by bypassing the web-based management interface.

Affected products

• Cisco Identity Services Engine: version 3.1.0 only; version 3.2.0 only; version 3.3.0 only; version 3.4.0 only; version 3.5.0 only
• Cisco Identity Services Engine Passive Identity Connector: version 3.1.0 only; version 3.2.0 only; version 3.3.0 only; version 3.4.0 only

Published 2026-09-16. Last modified 2026-10-07.