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CVE PROGRAM SOURCE RECORD8.6 High

CVE-2025-20343

Cisco Identity Services Engine Radius Suppression Denial of Service Vulnerability

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Status
Published
Published
Updated
Assigning organization
cisco

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Cisco Cisco Identity Services Engine Software

Default version status: unknown

  • 3.4.0affected
  • 3.4 Patch 1affected
  • 3.4 Patch 2affected
  • 3.4 Patch 3affected

References