Critical CVE-2026-76460 in Cisco ISE Allows Remote Authentication Bypass

## Overview Cisco disclosed a critical vulnerability in the Identity Services Engine (ISE) software. This vulnerability, tracked as CVE-2026-76460, has a CVSS score of 10.0, indicating its severity. It affects an API endpoint that lacks sufficient authentication controls. ## Technical Details The vulnerability arises from insufficient authentication on a specific API endpoint. An attacker can exploit this by sending a specially crafted request to the affected endpoint. If successful, the attacker can bypass the web-based management interface and gain unauthorized access to the device. This could lead to further exploitation of the network. ## Impact Successful exploitation of CVE-2026-76460 could allow attackers to control the Cisco ISE device without authentication. This could compromise the entire network's security, as ISE is often used for managing user access and network policies. Organizations using Cisco ISE should assess their exposure and take immediate action. ## Mitigation Cisco has released patches to address this vulnerability. Defenders should prioritize applying these patches to all affected systems. It is also advisable to review API access controls and monitor for any unusual activity on the network. Implementing additional security measures, such as network segmentation and intrusion detection systems, can further mitigate risks.