EUVD-2026-81104
GHSA-m52c-gwq5-xchj
Severity by source
AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
PR:N and S:C are supported by an unauthenticated access-control (CWE-284) failure crossing a trust boundary on an identity platform; C/I/A:H retained as vendor-asserted for a grouped critical hardening release.
Primary rating from Vendor (cisco).
CVSS VectorNVD
Lifecycle Timeline
2DescriptionNVD
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 a software hardening release that addresses multiple internally discovered vulnerabilities.
The vulnerabilities tracked by CVE-2026-20192 are related to improper access control issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-284.
AnalysisAI
Improper access control vulnerabilities in Cisco Identity Services Engine (ISE) and ISE Passive Identity Connector (ISE-PIC) allow unauthenticated remote attackers to bypass authentication and gain full control of affected deployments (CVSS 10.0). Cisco addressed these flaws in a software hardening release, and no public exploit has been identified at time of analysis. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires only network access to a Cisco ISE or ISE-PIC deployment's reachable interface - the CVSS vector is AV:N/AC:L/PR:N/UI:N, i.e. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is the single most severe member of the Cisco ISE 'cisco-sa-hardening-ise-XU5EwX5T' advisory family and warrants top-priority patching. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Patch available per vendor advisory: apply the software hardening release detailed in Cisco advisory cisco-sa-hardening-ise-XU5EwX5T (https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-ise-XU5EwX5T). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory every ISE and ISE-PIC deployment, confirm which are running pre-hardening releases, and treat the management interface as a Tier-0 asset by restricting reachability to a hardened administrative segment or jump host, removing any internet-facing or broadly routed management access, and enabling verbose audit logging of administrative sessions. …
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Authentication bypass in Cisco Identity Services Engine (ISE) and ISE Passive Identity Connector lets an unauthenticated
Cisco ISE and Cisco ISE-PIC can be taken over by an unauthenticated, remote attacker who reaches the REST API web servic
Remote, unauthenticated attackers with network access to Cisco Identity Services Engine (ISE) or ISE Passive Identity Co
Command injection in Cisco Identity Services Engine (ISE) lets an authenticated remote attacker holding only Read-Only A
Command injection in Cisco Identity Services Engine (ISE) and ISE Passive Identity Connector (PIC) allows authenticated
Remote code execution and privilege escalation in Cisco Identity Services Engine allows authenticated attackers with Rea
Authenticated remote command execution in Cisco Identity Services Engine (ISE) and ISE Passive Identity Connector (ISE-P
SQL injection in the SXP REST API of Cisco Identity Services Engine (ISE) lets a remote attacker who already holds valid
Command injection in Cisco Identity Services Engine (ISE) allows an authenticated, high-privileged remote administrator
Improper input validation in Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) all
Cisco Identity Services Engine (ISE) and ISE Passive Identity Connector (ISE-PIC) contain multiple internally discovered
Root-level command execution on Cisco Identity Services Engine (ISE) is achievable by an authenticated, high-privileged
Same weakness CWE-284 – Improper Access Control
View allSame technique Authentication Bypass
View allShare
External POC / Exploit Code
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