Vulnerability Database

290,206

Total vulnerabilities in the database

CVE-2020-3221

A vulnerability in the Flexible NetFlow Version 9 packet processor of Cisco IOS XE Software for Cisco Catalyst 9800 Series Wireless Controllers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper validation of parameters in a Flexible NetFlow Version 9 record. An attacker could exploit this vulnerability by sending a malformed Flexible NetFlow Version 9 packet to the Control and Provisioning of Wireless Access Points (CAPWAP) data port of an affected device. An exploit could allow the attacker to trigger an infinite loop, resulting in a process crash that would cause a reload of the device.

  • Published: Jun 3, 2020
  • Updated: Apr 14, 2023
  • CVE: CVE-2020-3221
  • Severity: High
  • Exploit:

CVSS v3:

  • Severity: High
  • Score: 8.6
  • AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

CVSS v2:

  • Severity: High
  • Score: 7.8
  • AV:N/AC:L/Au:N/C:N/I:N/A:C

CWEs:

Software From Fixed in
cisco / ios_xe 16.10.1 16.10.1.x
cisco / ios_xe 16.10.1a 16.10.1a.x
cisco / ios_xe 16.10.1b 16.10.1b.x
cisco / ios_xe 16.10.1e 16.10.1e.x
cisco / ios_xe 16.10.1s 16.10.1s.x
cisco / ios_xe 16.10.2 16.10.2.x
cisco / ios_xe 16.11.1 16.11.1.x
cisco / ios_xe 16.11.1a 16.11.1a.x
cisco / ios_xe 16.11.1b 16.11.1b.x
cisco / ios_xe 16.11.1c 16.11.1c.x
cisco / ios_xe 16.11.1s 16.11.1s.x
cisco / ios_xe 16.12.1 16.12.1.x
cisco / ios_xe 16.12.1a 16.12.1a.x
cisco / ios_xe 16.12.1c 16.12.1c.x
cisco / ios_xe 16.12.1s 16.12.1s.x
cisco / ios_xe 16.12.1t 16.12.1t.x