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VULNERABILITIES

CVE-2021-34726 Details

Description

A vulnerability in the CLI of Cisco SD-WAN Software could allow an authenticated, local attacker to inject arbitrary commands to be executed with root-level privileges on the underlying operating system of an affected device. This vulnerability is due to insufficient input validation on certain CLI commands. An attacker could exploit this vulnerability by authenticating to an affected device and submitting crafted input to the CLI. The attacker must be authenticated as an administrative user to execute the affected commands. A successful exploit could allow the attacker to execute commands with root-level privileges.

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References to Advisories, Solutions, and Tools

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Weakness Enumeration

CWE-IDCWE NameSource
CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')[email protected]
CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')[email protected]

Affected Products

ProductVersions
cisco sd-wan
< 18.4.6
>= 19.2.0, < 19.2.3
>= 20.1, < 20.1.2
>= 20.3, < 20.3.1
>= 20.4, < 20.4.1

CPE

  • cpe:2.3:a:cisco:sd-wan:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

6 change records found show changes


QUICK INFO

CVE Dictionary Entry:
CVE-2021-34726
NVD Published Date:
Sep 23, 2021
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2021-34726 Details - Not Deferred