CVE-2020-3418 describes an incomplete access control list (ACL) vulnerability in Cisco IOS XE Wireless Controller Software for Cisco Catalyst 9800 Series Routers. This flaw allows an unauthenticated, adjacent attacker to send ICMPv6 traffic to affected devices (e.g., Catalyst 9800-40, 9800-80, 9800-CL) before a client reaches the RUN state. The vulnerability has a CVSS v3.1 score of 4.7 (MEDIUM), indicating a low-complexity attack requiring adjacent network access with no user interaction. A successful exploit could lead to unauthorized ICMPv6 traffic prior to the intended security posture being fully applied. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE. It is not listed in CISA's KEV catalog.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
17.1.1CPE matchmatch criteria | cpe:2.3:o:cisco:ios_xe:17.1.1:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
No social media mentions found for this CVE.
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.