{"id":"CVE-2026-20193","aliases":["EUVD-2026-27862","GHSA-qwrq-5c2q-3p3m"],"status":"published","title":"Cisco Identity Services Engine Authentication Bypass Vulnerability","description":"A vulnerability in the RADIUS Policy API endpoints of Cisco ISE could allow an\u0026nbsp;authenticated, remote attacker with read-only Administrator privileges to gain unauthorized access to sensitive information on an affected device.\r\n\r\nThis 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\u0026nbsp;read access to sensitive RADIUS Policy details that are restricted for their role.","severity":{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00221,"percentile":0.12719,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-862"],"published":"2026-05-06T16:15:16Z","modified":"2026-10-26T19:10:00Z","products":[{"vendor":"cisco","product":"cisco identity services engine software"},{"vendor":"cisco","product":"identity_services_engine"}],"references":[{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-unauth-bypass-uxjRXGpb","tags":["Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-20193"},{"url":"https://github.com/advisories/GHSA-qwrq-5c2q-3p3m"}],"sources":{"cve":[{"id":"CVE-2026-20193","title":"Cisco Identity Services Engine Authentication Bypass Vulnerability","description":"A vulnerability in the RADIUS Policy API endpoints of Cisco ISE could allow an\u0026nbsp;authenticated, remote attacker with read-only Administrator privileges to gain unauthorized access to sensitive information on an affected device.\r\n\r\nThis 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\u0026nbsp;read access to sensitive RADIUS Policy details that are restricted for their role.","status":"published","published":"2026-05-06T16:15:16.835Z","modified":"2026-05-06T17:48:32.189Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T13:35:33.380441Z"}],"euvd":[{"id":"EUVD-2026-27862","description":"A vulnerability in the RADIUS Policy API endpoints of Cisco ISE could allow an\u0026nbsp;authenticated, remote attacker with read-only Administrator privileges to gain unauthorized access to sensitive information on an affected device.\r\n\r\nThis 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\u0026nbsp;read access to sensitive RADIUS Policy details that are restricted for their role.","status":"published","published":"2026-05-06T16:15:16Z","modified":"2026-05-06T17:48:32Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T19:05:16.191098Z"}],"ghsa":[{"id":"GHSA-qwrq-5c2q-3p3m","title":"A vulnerability in the RADIUS Policy API endpoints of Cisco ISE could allow an\u0026nbsp;authenticated...","description":"A vulnerability in the RADIUS Policy API endpoints of Cisco ISE could allow an\u0026nbsp;authenticated, remote attacker with read-only Administrator privileges to gain unauthorized access to sensitive information on an affected device.\n\nThis 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\u0026nbsp;read access to sensitive RADIUS Policy details that are restricted for their role.","status":"published","published":"2026-05-06T18:30:31Z","modified":"2026-05-06T18:30:42Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T15:07:55.247215Z"}],"nvd":[{"id":"CVE-2026-20193","description":"A vulnerability in the RADIUS Policy API endpoints of Cisco ISE could allow an\u0026nbsp;authenticated, remote attacker with read-only Administrator privileges to gain unauthorized access to sensitive information on an affected device.\r\n\r\nThis 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\u0026nbsp;read access to sensitive RADIUS Policy details that are restricted for their role.","status":"published","published":"2026-05-06T17:16:21.5Z","modified":"2026-10-26T19:10:00.163Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:12:17.418622Z"}]}}