Cisco AireOS Software for Cisco Wireless LAN Controllers (WLC) DoS (cisco-sa-iosxe-wlc-fnfv9-EvrAQpNX)

high Nessus Plugin ID 141369
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VPR Score: 4.4


The remote device is missing a vendor-supplied security patch


According to its self-reported version, the remote Cisco Wireless LAN Controller (WLC) device is affected by a DoS vulnerability in the Flexible NetFlow Version 9 packet processor due to insufficient validation of certain parameters in a Flexible NetFlow Version 9 record. An unauthenticated, remote attacker could cause a DoS condition on an affected device. Please see the included Cisco BID and Cisco Security Advisory for more information.


Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvr53845

See Also

Plugin Details

Severity: High

ID: 141369

File Name: cisco-sa-iosxe-wlc-fnfv9-EvrAQpNX-wlc.nasl

Version: 1.16

Type: combined

Family: CISCO

Published: 10/12/2020

Updated: 3/29/2021

Dependencies: cisco_wlc_version.nasl

Risk Information

Risk Factor: High

VPR Score: 4.4

CVSS Score Source: CVE-2020-3492

CVSS v2.0

Base Score: 7.8

Temporal Score: 5.8

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 8.6

Temporal Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:cisco:wireless_lan_controller_(wlc)

Required KB Items: Host/Cisco/WLC/Version, Host/Cisco/WLC/Port

Exploit Ease: No known exploits are available

Patch Publication Date: 9/24/2020

Vulnerability Publication Date: 9/24/2020

Reference Information

CVE: CVE-2020-3492


CISCO-SA: cisco-sa-iosxe-wlc-fnfv9-EvrAQpNX

IAVA: 2020-A-0439

CWE: 20