CVE-2020-3221 describes a denial-of-service vulnerability in the Flexible NetFlow Version 9 packet processor of Cisco IOS XE Software for Catalyst 9800 Series Wireless Controllers. An unauthenticated, remote attacker can exploit this by sending a malformed NetFlow packet to the CAPWAP data port, leading to an infinite loop and device reload. With a CVSS score of 8.6 (HIGH), this vulnerability has a network attack vector, low attack complexity, and a high impact on availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
16.10.1CPE matchmatch criteria | cpe:2.3:o:cisco:ios_xe:16.10.1:*:*:*:*:*:*:* | ||
16.10.1aCPE matchmatch criteria | cpe:2.3:o:cisco:ios_xe:16.10.1a:*:*:*:*:*:*:* | ||
16.10.1bCPE matchmatch criteria | cpe:2.3:o:cisco:ios_xe:16.10.1b:*:*:*:*:*:*:* | ||
16.10.1eCPE matchmatch criteria | cpe:2.3:o:cisco:ios_xe:16.10.1e:*:*:*:*:*:*:* | ||
16.10.1sCPE matchmatch criteria | cpe:2.3:o:cisco:ios_xe:16.10.1s:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
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, 0.1 Mastodon, and 0.4 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.