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Cisco Identity Services Engine Remote Code Execution Vulnerability

CVSS 3.1 9.1 CRITICALCheck source for fixed versionsKEV status unknown

cve-program · CVE-2026-20176

Published

A vulnerability in Cisco ISE 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 high-privileged 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 system-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 DoS condition. In that condition, endpoints that have not already authenticated would be unable to access the network until the node is restored.

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Affected versions, risk and source history

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CVE-2026-20176 · CVE overview and exploitation status

cve-program · CVE-2026-20176

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ChangeIntel

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Sources read 13 Nov 09:00 UTC · 274 of 275 readable · 272 fully read · documentation 469/469 current