CVE-2026-76460

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.

Score

CVSS 3.1 10.0 Critical

Status

Analyzed - psirt@cisco.com

Published

2026-09-16

Last modified

2026-10-07

Known exploited (CISA KEV)

since 2026-09-16, action due 2026-09-19: 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.

Weaknesses

CWE-648

Affected products

• Cisco Identity Services Engine Software (Cisco)
• Cisco Ise Passive Identity Connector (Cisco)
• Identity Services Engine (Cisco)
• Identity Services Engine Passive Identity Connector (Cisco)

References

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ISE-ABP-VNSW7Tn5
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-76460