CVE-2026-20193: Missing Authorization in Cisco Cisco Identity Services Engine Software
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.
AI Analysis
Technical Summary
This vulnerability in Cisco ISE arises from insufficient enforcement of role-based access control on RADIUS Policy API endpoints. An attacker with authenticated read-only Administrator privileges can bypass the web management interface and directly call these API endpoints to access sensitive RADIUS Policy details beyond their authorized scope. The issue affects multiple versions of Cisco ISE 3.3.x, 3.4.x, and 3.5.x. The CVSS 3.1 base score is 4.3 (medium), reflecting low impact on confidentiality and no impact on integrity or availability. No vendor advisory or patch information is currently available, and the vulnerability is not in a cloud service environment.
Potential Impact
An authenticated attacker with read-only Administrator privileges on Cisco ISE can gain unauthorized read access to sensitive RADIUS Policy information that should be restricted. This could potentially expose sensitive configuration details but does not allow modification or disruption of service. There are no known active exploits targeting this vulnerability.
Mitigation Recommendations
Patch status is not yet confirmed — check the Cisco vendor advisory for current remediation guidance. Until an official fix is available, restrict read-only Administrator access to trusted users only and monitor for unusual API activity related to RADIUS Policy endpoints. No official mitigation or workaround has been published by Cisco at this time.
CVE-2026-20193: Missing Authorization in Cisco Cisco Identity Services Engine Software
Description
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Cisco ISE arises from insufficient enforcement of role-based access control on RADIUS Policy API endpoints. An attacker with authenticated read-only Administrator privileges can bypass the web management interface and directly call these API endpoints to access sensitive RADIUS Policy details beyond their authorized scope. The issue affects multiple versions of Cisco ISE 3.3.x, 3.4.x, and 3.5.x. The CVSS 3.1 base score is 4.3 (medium), reflecting low impact on confidentiality and no impact on integrity or availability. No vendor advisory or patch information is currently available, and the vulnerability is not in a cloud service environment.
Potential Impact
An authenticated attacker with read-only Administrator privileges on Cisco ISE can gain unauthorized read access to sensitive RADIUS Policy information that should be restricted. This could potentially expose sensitive configuration details but does not allow modification or disruption of service. There are no known active exploits targeting this vulnerability.
Mitigation Recommendations
Patch status is not yet confirmed — check the Cisco vendor advisory for current remediation guidance. Until an official fix is available, restrict read-only Administrator access to trusted users only and monitor for unusual API activity related to RADIUS Policy endpoints. No official mitigation or workaround has been published by Cisco at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- cisco
- Date Reserved
- 2025-10-08T11:59:15.395Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69fb718ecbff5d86100fce18
Added to database: 5/6/2026, 4:51:26 PM
Last enriched: 5/6/2026, 5:07:39 PM
Last updated: 5/7/2026, 7:40:03 AM
Views: 13
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