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CVE-2025-20152

HIGH CVSS: 8.6 Published: 2025-05-21 Modified: 2026-06-17

Description

A vulnerability in the RADIUS message processing feature of Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper handling of certain RADIUS requests. An attacker could exploit this vulnerability by sending a specific authentication request to a network access device (NAD) that uses Cisco ISE for authentication, authorization, and accounting (AAA). A successful exploit could allow the attacker to cause Cisco ISE to reload.

Affected Platforms

Cisco Identity Services Engine

Weakness Type

CWE-125

References