CISCO: Reference: Cisco Security Advisory on ISE Vulnerabilities

CISCO Security Advisory

Published Date: July 6, 2026

CVE: CVE-2026-20181

Advisory Summary

❗ Critical Vulnerabilities Discovered in Cisco Identity Services Engine (ISE) and Passive Identity Connector (ISE-PIC) ❗

Cisco has identified multiple critical vulnerabilities in its Identity Services Engine (ISE) and ISE Passive Identity Connector (ISE-PIC) that could permit remote attackers to execute arbitrary code or cause information disclosure. These flaws, documented under CVE-2026-20181 and CVE-2026-20190, pose a serious security risk to affected infrastructure environments relying on Cisco ISE for network access control and policy enforcement.

• Attackers can achieve remote code execution or access sensitive information on compromised devices.
• Cisco has promptly released software updates that fully address these vulnerabilities.
• No effective workarounds exist, making patch application essential.
• Organizations running Cisco ISE or ISE-PIC should prioritize deploying the provided security patches to mitigate risk.

This serves as a critical reminder for IT security teams managing network and identity infrastructure: timely patch management remains vital to defend against increasingly sophisticated remote exploits targeting core network authentication services.

For detailed technical information and update instructions, please refer to Cisco’s official advisory.

Reference: Vendor Advisory