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CVE-2026-20193— Cisco Identity Services Engine Authentication Bypass Vulnerability

CVSS 4.3 · Medium EPSS 0.02% · P7
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I. Basic Information for CVE-2026-20193

Vulnerability Information
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Vulnerability Title
Cisco Identity Services Engine Authentication Bypass Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制缺失
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco ISE 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco ISE是美国思科（Cisco）公司的一个 NAC 解决方案。用于管理零信任架构中的端点、用户和设备对网络资源的访问。 Cisco ISE存在安全漏洞，该漏洞源于RADIUS Policy API端点上基于角色的访问控制权限不当，可能导致具有只读管理员权限的经过身份验证的远程攻击者绕过Web管理界面直接调用受影响端点，获取未授权的敏感信息访问。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
CiscoCisco Identity Services Engine Software 3.3.0 -

II. Public POCs for CVE-2026-20193

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III. Intelligence Information for CVE-2026-20193

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IV. Related Vulnerabilities

Same product: Cisco Identity Services Engine Software
Same vendor: Cisco
Same weakness: CWE-862

V. Comments for CVE-2026-20193

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