CISCO Security Advisory
Published Date: May 6, 2026
CVE: CVE-2026-20193
Advisory Summary
🚨 Security Alert: Cisco Identity Services Engine Authentication Bypass Vulnerabilities
Multiple critical vulnerabilities have been identified in Cisco Identity Services Engine (ISE), which may allow remote attackers to bypass authorization controls or glean sensitive information by analyzing error messages on affected devices. This could expose networks to unauthorized access risks, potentially compromising security policies and device integrity.
🔐 Impact & Risk: The overall security impact is rated as Medium, but given Cisco ISE’s central role in network access control and identity management, prompt remediation is essential to prevent unauthorized network access or information leakage.
🛠 Mitigation: Cisco has published software updates that fully address these vulnerabilities. Importantly, there are no effective workarounds available, so immediate application of the provided patches is strongly recommended.
📌 Vulnerabilities Identified: CVE-2026-20193 and CVE-2026-20195
For security teams managing Cisco ISE deployments, focus on expediting patch management to maintain network access integrity and prevent potential exploitation scenarios.
-2026-20193
Reference: Vendor Advisory