6.7
MEDIUM
CVE-2021-34726
Cisco SD-WAN Software Command Injection Vulnerability
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.

INFO

Published Date :

Sept. 23, 2021, 3:15 a.m.

Last Modified :

Oct. 24, 2022, 2:25 p.m.

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

0.8
Affected Products

The following products are affected by CVE-2021-34726 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Cisco sd-wan
2 Cisco sd-wan_solution
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-34726.

URL Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-maapi-cmdinjec-znUYTuC Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-34726 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-34726 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Reanalysis by [email protected]

    Oct. 24, 2022

    Action Type Old Value New Value
    Removed CWE NIST CWE-77
    Added CWE NIST CWE-78
  • Initial Analysis by [email protected]

    Oct. 13, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:C/I:C/A:C)
    Added CVSS V3.1 NIST AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-maapi-cmdinjec-znUYTuC No Types Assigned https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-maapi-cmdinjec-znUYTuC Vendor Advisory
    Added CWE NIST CWE-77
    Added CPE Configuration OR *cpe:2.3:a:cisco:sd-wan:*:*:*:*:*:*:*:* versions up to (excluding) 18.4.6 *cpe:2.3:a:cisco:sd-wan:*:*:*:*:*:*:*:* versions from (including) 19.2.0 up to (excluding) 19.2.3 *cpe:2.3:a:cisco:sd-wan:*:*:*:*:*:*:*:* versions from (including) 20.1 up to (excluding) 20.1.2 *cpe:2.3:a:cisco:sd-wan:*:*:*:*:*:*:*:* versions from (including) 20.3 up to (excluding) 20.3.1 *cpe:2.3:a:cisco:sd-wan:*:*:*:*:*:*:*:* versions from (including) 20.4 up to (excluding) 20.4.1 *cpe:2.3:a:cisco:sd-wan:*:*:*:*:*:*:*:* versions from (including) 20.5 up to (excluding) 20.5.1
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-34726 is associated with the following CWEs:

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.04 }} 0.00%

score

0.05784

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability