CVE-2026-20181
Cisco Identity Services Engine Remote Code Execution Vulnerability
At a glance Severity CRITICAL 9.1 EPSS EPSS 8.93 % · percentile 95 (2026-10-27) State PUBLISHED Published 2026-06-17 Updated 2026-06-18 Assigner cisco NVD status Analyzed Description A vulnerability in Cisco ISE and ISE-PIC could allow an authenticated, remote attacker to execute arbitrary commands on the underlying operating system of an affected device. To exploit this vulnerability, the attacker must have valid administrative credentials.
This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to obtain user-level access to the underlying operating system and then elevate privileges to root. In single-node deployments, successful exploitation of this vulnerability could cause the affected ISE node to become unavailable, resulting in a denial of service (DoS) condition. In that condition, endpoints that have not already authenticated would be unable to access the network until the node is restored.
Scores Version Score Vector Scored by CVSS 3.1 CRITICAL 9.1 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H cisco CVSS 3.1 CRITICAL 9.1 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H NVD · psirt@cisco.com (Secondary)
Weaknesses (CWE)
European references
CERT-FR advisories
Affected configurations (NVD CPE) cpe:2.3:a:cisco:identity_services_engine:*:*:*:*:*:*:*:* < 3.3.0cpe:2.3:a:cisco:identity_services_engine:3.3.0:-:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch1:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch10:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch2:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch3:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch4:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch5:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch6:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch7:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch8:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch9:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine:3.4.0:-:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine:3.4.0:patch1:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine:3.4.0:patch2:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine:3.4.0:patch3:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine:3.4.0:patch4:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine:3.4.0:patch5:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine:3.5.0:-:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine:3.5.0:patch1:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine:3.5.0:patch2:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine:3.5.0:patch3:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:*:*:*:*:*:*:*:* < 3.3.0cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:-:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch1:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch10:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch2:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch3:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch4:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch5:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch6:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch7:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch8:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch9:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.4.0:-:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.4.0:patch1:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.4.0:patch2:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.4.0:patch3:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.4.0:patch4:*:*:*:*:*:*cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.4.0:patch5:*:*:*:*:*:*Affected products
References
Sources
