CVE-2019-12663

HIGH

Cisco IOS XE - Unauthenticated Denial of Service via Malicious RADIUS Message

Title source: llm

Description

A vulnerability in the Cisco TrustSec (CTS) Protected Access Credential (PAC) provisioning module of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to improper validation of attributes in RADIUS messages. An attacker could exploit this vulnerability by sending a malicious RADIUS message to an affected device while the device is in a specific state.

References (1)

Core 1

Core References

Vendor Advisory vendor-advisory x_refsource_cisco

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190925-ctspac-dos

Scores

CVSS v3 8.6

EPSS 0.0178

EPSS Percentile 75.5%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-20

Status published

Products (2)

cisco/ios_xe 16.6.4

cisco/ios_xe 16.12.1

Published Sep 25, 2019

Tracked Since Feb 18, 2026