Cisco IOS Software for Industrial Routers Virtual LPWA Unauthorized Access (cisco-sa-ios-lpwa-access-cXsD7PRA)

critical Nessus Plugin ID 148296
New! Plugin Severity Now Using CVSS v3

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The remote device is missing a vendor-supplied security patch


According to its self-reported version, IOS is affected by a vulnerability. The vulnerability is due to a lack of input validation checking mechanisms for virtual-LPWA (VLPWA) protocol modem messages. An unauthenticated remote attacker could exploit this vulnerability by supplying crafted packets to an affected device, to gain unauthorized read access to sensitive data or cause the VLPWA interface of the affected device to shut down, resulting in a denial of service condition.

Please see the included Cisco BIDs and Cisco Security Advisory for more information.


Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvr53526

See Also

Plugin Details

Severity: Critical

ID: 148296

File Name: cisco-sa-ios-lpwa-access-cXsD7PRA.nasl

Version: 1.6

Type: combined

Family: CISCO

Published: 4/2/2021

Updated: 5/20/2021

Dependencies: cisco_ios_version.nasl

Risk Information

CVSS Score Source: CVE-2020-3426


Risk Factor: Medium

Score: 5.2


Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

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

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


Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

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

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

Vulnerability Information

CPE: cpe:/o:cisco:ios

Required KB Items: Host/Cisco/IOS/Version, Host/Cisco/IOS/Model

Exploit Ease: No known exploits are available

Patch Publication Date: 9/24/2020

Vulnerability Publication Date: 9/24/2020

Reference Information

CVE: CVE-2020-3426