Vulnerability 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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Identity Services Engine | < 3.3.0 |
| Cisco | Identity Services Engine Passive Identity Connector | < 3.3.0 |
Related Weaknesses (CWE)
References
FAQ
What is CVE-2026-20181?
CVE-2026-20181 is a vulnerability with a CVSS score of 9.1 (CRITICAL). 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 vulnerabi...
How severe is CVE-2026-20181?
CVE-2026-20181 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-20181?
Check the references section above for vendor advisories and patch information. Affected products include: Cisco Identity Services Engine, Cisco Identity Services Engine Passive Identity Connector.