CVE-2026-76460
Published 2026-09-16 · Updated 2026-10-07 · Source psirt@cisco.com
Summary
CVE-2026-76460 is a critical-severity (CVSS 10.0) vulnerability in Cisco Identity Services Engine. CISA added it to the Known Exploited Vulnerabilities catalog on September 16, 2026, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by September 19, 2026. CISA does not currently list it as used in ransomware campaigns. Cisco has 102 vulnerabilities in the KEV catalog, 7 of them linked to ransomware.
All 102 known-exploited Cisco vulnerabilities →Description
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.
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CISA Known-Exploited Vulnerability
Product: Cisco — Identity Services Engine
Name: Cisco Identity Services Engine Incorrect Use of Privileged APIs Vulnerability
Date added: 2026-09-16 · Due: 2026-09-19
Required action: 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.