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I. Basic Information for CVE-2025-20343
Vulnerability Information

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Vulnerability Title
Cisco Identity Services Engine Radius Suppression Denial of Service Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in the RADIUS setting Reject RADIUS requests from clients with repeated failures on Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to cause Cisco ISE to restart unexpectedly. This vulnerability is due to a logic error when processing a RADIUS access request for a MAC address that is already a rejected endpoint. An attacker could exploit this vulnerability by sending a specific sequence of multiple crafted RADIUS access request messages to Cisco ISE. A successful exploit could allow the attacker to cause a denial of service (DoS) condition when Cisco ISE restarts.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
不充分的比较
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco Identity Services Engine 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Identity Services Engine(Cisco ISE)是美国思科(Cisco)公司的一款环境感知平台(ISE身份服务引擎)。该平台通过收集网络、用户和设备中的实时信息,制定并实施相应策略来监管网络。 Cisco Identity Services Engine(Cisco ISE)存在安全漏洞,该漏洞源于处理RADIUS访问请求时存在逻辑错误,可能导致拒绝服务。
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 3.4.0 -
II. Public POCs for CVE-2025-20343
#POC DescriptionSource LinkShenlong Link
1CVE-2025-20343https://github.com/B1ack4sh/Blackash-CVE-2025-20343POC Details
2CVE-2025-20343https://github.com/Ashwesker/Blackash-CVE-2025-20343POC Details
3CVE-2025-20343https://github.com/fevar54/Blackash-CVE-2025-20343POC Details
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III. Intelligence Information for CVE-2025-20343
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IV. Related Vulnerabilities
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