CVE-2020-3426: Cisco IOS Software for Cisco Industrial Routers Virtual-LPWA Unauthorized Access Vulnerability
First published: Thu Sep 24 2020(Updated: )
A vulnerability in the implementation of the Low Power, Wide Area (LPWA) subsystem of Cisco IOS Software for Cisco 800 Series Industrial Integrated Services Routers (Industrial ISRs) and Cisco 1000 Series Connected Grid Routers (CGR1000) could allow an unauthenticated, remote attacker to gain unauthorized read access to sensitive data or cause a denial of service (DoS) condition. The vulnerability is due to a lack of input and validation checking mechanisms for virtual-LPWA (VLPWA) protocol modem messages. An attacker could exploit this vulnerability by supplying crafted packets to an affected device. A successful exploit could allow the attacker to gain unauthorized read access to sensitive data or cause the VLPWA interface of the affected device to shut down, resulting in DoS condition.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco IOS | ||
| Cisco 1120 Connected Grid Router | ||
| Cisco 1240 Connected Grid Router | ||
| Cisco 807 Industrial Integrated Services Router | ||
| Cisco 809 Industrial Integrated Services Router | ||
| Cisco 829 Industrial Integrated Services Router |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2020-3426?
The severity of CVE-2020-3426 is critical with a CVSS score of 9.1.
Which software is affected by CVE-2020-3426?
Cisco IOS Software for Cisco 800 Series Industrial Integrated Services Routers (Industrial ISRs) and Cisco 1000 Series Connected Grid Routers (CGR1000) are affected by CVE-2020-3426.
What is the vulnerability in CVE-2020-3426?
CVE-2020-3426 is a vulnerability in the implementation of the Low Power Wide Area (LPWA) subsystem of Cisco IOS Software.
How can an attacker exploit CVE-2020-3426?
An unauthenticated, remote attacker can exploit CVE-2020-3426 to gain unauthorized access.
Where can I find more information about CVE-2020-3426?
You can find more information about CVE-2020-3426 on the Cisco Security Advisory page: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-lpwa-access-cXsD7PRA
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