CVE-2020-3418

Medium

Description

A vulnerability in Cisco IOS XE Wireless Controller Software for Cisco Catalyst 9800 Series Routers could allow an unauthenticated, adjacent attacker to send ICMPv6 traffic prior to the client being placed into RUN state. The vulnerability is due to an incomplete access control list (ACL) being applied prior to RUN state. An attacker could exploit this vulnerability by connecting to the associated service set identifier (SSID) and sending ICMPv6 traffic. A successful exploit could allow the attacker to send ICMPv6 traffic prior to RUN state.

SeverityMedium

CVSS4.7

Exploit probability—

Product

Cisco Ios Xe

PublishedSep 24, 2020

First seenSep 24, 2020

Weakness typeCWE-284Improper access control

How to fix

Vendor advisories

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ewlc-icmpv6-qb9eYyCR

Affected products

Product	Affected versions	Fixed in
cisco ios_xe	17.1.1	—

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