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HIGH

Cisco IOS XE Software MACsec MKA Using EAP-TLS Authentication Bypass Vulnerability

Published Oct 5, 2018

Description

A vulnerability in the MACsec Key Agreement (MKA) using Extensible Authentication Protocol-Transport Layer Security (EAP-TLS) functionality of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to bypass authentication and pass traffic through a Layer 3 interface of an affected device. The vulnerability is due to a logic error in the affected software. An attacker could exploit this vulnerability by connecting to and passing traffic through a Layer 3 interface of an affected device, if the interface is configured for MACsec MKA using EAP-TLS and is running in access-session closed mode. A successful exploit could allow the attacker to bypass 802.1x network access controls and gain access to the network.

Affected products

Remediation

No remediation recorded yet.

Metrics

Weaknesses (1)

References (2)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner cisco
Published Oct 5, 2018
Updated Nov 26, 2024
Reserved Aug 17, 2018
CISA Vulnrichment
Updated Nov 25, 2024
NVD
Status Modified
Modified Jun 17, 2026
Red Hat
Severity n/a
Public date n/a