CVE-2026-76460

Critical

Cisco Identity Services Engine Incorrect Use of Privileged APIs Vulnerability

10.0 CVSS v3.1

Published: Sep 16, 2026
Updated: Oct 7, 2026
Vendor: Cisco
Affected versions: See affected products
Weakness: CWE-648

Summary

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.

Severity

Critical (10.0)

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected products

Cisco Identity Services Engine 3.1.0
Cisco Identity Services Engine 3.2.0
Cisco Identity Services Engine 3.3.0
Cisco Identity Services Engine 3.4.0
Cisco Identity Services Engine 3.5.0
Cisco Identity Services Engine Passive Identity Connector 3.1.0
Cisco Identity Services Engine Passive Identity Connector 3.2.0
Cisco Identity Services Engine Passive Identity Connector 3.3.0
Cisco Identity Services Engine Passive Identity Connector 3.4.0

Exploitation status

Actively exploited

Listed in the CISA Known Exploited Vulnerabilities catalog on Sep 16, 2026. Federal remediation due: Sep 19, 2026.

Technical details

Technical analysis has not been written for this record yet.

Mitigation & remediation

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.