Cisco Identity Services Engine Hardening Release: September 2026

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) engineering teams have conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.

These vulnerabilities were found during internal testing. One of them is known to be actively exploited. For more information, see Cisco Identity Services Engine Authentication Bypass Vulnerability ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ISE-ABP-VNSW7Tn5"]. To assist customers in patching and streamline the disclosure process, Cisco has grouped these issues by their underlying vulnerability class — Common Weakness Enumeration (CWE) — and assigned a single Common Vulnerabilities and Exposures identifier (CVE ID) to each CWE grouping.

Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.

This advisory is part of a group of advisories. For a complete list of the advisories and links to them, see Cisco Advance Notification for Publication of September 16, 2026, Security Advisories ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-notice-jfxK98ZP"].

CVE-2026-20192 — Cisco Identity Services Engine Hardening Release - Access Control Vulnerabilities (CVSS 3.1 10.0, CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H) CVE-2026-20130 — Cisco Identity Services Engine Hardening Release - Improper Neutralization Vulnerabilities (CVSS 3.1 10.0, CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H) CVE-2026-20194 — Cisco Identity Services Engine Hardening Release - Incorrect Resource Transfer Vulnerabilities (CVSS 3.1 9.1, CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H) CVE-2026-20234 — Cisco Identity Services Engine Hardening Release - Insuffiencently Protected Credential Vulnerabilities (CVSS 3.1 9.9, CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H) CVE-2026-20237 — Cisco Identity Services Engine Hardening Release - Input Validation Vulnerabilities (CVSS 3.1 9.1, CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H) CVE-2026-20287 — Cisco Identity Services Engine Hardening Release - Improper Privlege Management Vulnerabilities (CVSS 3.1 6.5, CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N)