What is CVE-2020-3418?

CVE-2020-3418 is a medium-severity vulnerability in Cisco Catalyst 9800-40, classified under Improper Access Control. CVSS score: 4.7/10. Published 2020-09-24.

How severe is CVE-2020-3418?

Medium severity. CVSS v3 base score is 4.7 out of 10.

Vulnerability in Cisco Catalyst 9800-40

CVE-2020-3418

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.

EPSS: 0.004 (33.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N.

Affected products

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2020-3418?: CVE-2020-3418 is a medium-severity vulnerability in Cisco Catalyst 9800-40, classified under Improper Access Control. CVSS score: 4.7/10. Published 2020-09-24.
How severe is CVE-2020-3418?: Medium severity. CVSS v3 base score is 4.7 out of 10.