CVE-2026-20193
MediumCVSS 4.3Exploitation Probability (EPSS)
Low risk14th percentile - higher than 14% of all known CVEs
Summary
A vulnerability in the RADIUS Policy API endpoints of Cisco ISE allows an authenticated, remote attacker with read-only Administrator privileges to gain unauthorized access to sensitive information. This is due to improper role-based access control (RBAC) permissions on these API endpoints.
Risk Assessment
The organization risks exposure of sensitive RADIUS Policy details, which could be leveraged for further attacks or network compromise. The attacker can bypass the web-based management interface and directly call the vulnerable endpoint.
Recommendation
Apply the Cisco ISE update containing the fix immediately and review RBAC permissions for read-only administrator accounts.
Other vulnerabilities in Cisco ISE
See all- CVE-2026-20148Medium
A vulnerability in Cisco ISE and Cisco ISE-PIC allows an authenticated remote attacker to perform path traversal attacks on the underlying OS and read arbitrary files. The flaw is due to improper validation of user-supplied input.
- CVE-2026-20147Critical
A vulnerability in Cisco ISE and Cisco ISE-PIC allows an authenticated remote administrator to execute arbitrary commands on the underlying OS. The issue is due to insufficient input validation.
- CVE-2026-20195Medium
A vulnerability in an identity management API endpoint of Cisco ISE allows an unauthenticated, remote attacker to enumerate valid user accounts on an affected device. The issue exists due to observable error messages when the API endpoint is called.
Original NVD description (English source)
A vulnerability in the RADIUS Policy API endpoints of Cisco ISE could allow an authenticated, remote attacker with read-only Administrator privileges to gain unauthorized access to sensitive information on an affected device. This vulnerability is due to improper role-based access control (RBAC) permissions on the RADIUS Policy API endpoints. An attacker could exploit this vulnerability by bypassing the web-based management interface and directly calling an affected endpoint. A successful exploit could allow the attacker to gain unauthorized read access to sensitive RADIUS Policy details that are restricted for their role.