CVE-2025-20343

EIP tracks 1 public exploit for CVE-2025-20343. PoCs published by fevar54.

AI-analyzed exploit summary This repository contains a detailed writeup for CVE-2025-20343, a high-severity DoS vulnerability in Cisco ISE due to a logic error in RADIUS request handling. It describes how unauthenticated attackers can crash the device by sending crafted RADIUS packets.

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.