Cisco ThousandEyes Virtual Appliance up to 5.2.0 Web-based Management Interface os command injection

Summaryinfo

A vulnerability classified as very critical was found in Cisco ThousandEyes Virtual Appliance up to 5.2.0. This affects an unknown part of the component Web-based Management Interface. Executing a manipulation can lead to os command injection. This vulnerability is registered as CVE-2026-20350. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in Cisco ThousandEyes Virtual Appliance up to 5.2.0 and classified as very critical. This vulnerability affects an unknown function of the component Web-based Management Interface. The manipulation with an unknown input leads to a os command injection vulnerability. The CWE definition for the vulnerability is CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A vulnerability in the web-based management interface of Cisco ThousandEyes Virtual Appliance could allow an authenticated, remote attacker to inject arbitrary operating system commands. This vulnerability is due to improper validation of user-supplied input to the web-based management interface. An attacker could exploit this vulnerability by saving configuration details that contain malicious values. A successful exploit could allow the attacker to execute arbitrary operating system commands with root privileges. To exploit this vulnerability, the attacker must have valid administrative credentials.

The advisory is available at sec.cloudapps.cisco.com. This vulnerability was named CVE-2026-20350 since 10/08/2025. The exploitation appears to be easy. The attack can be initiated remotely. The exploitation requires an enhanced level of successful authentication. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/16/2026). This vulnerability is assigned to T1202 by the MITRE ATT&CK project.

Upgrading eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• Cisco

Name

• ThousandEyes Virtual Appliance

Version

• 4.0
• 4.1
• 4.2
• 4.4.2
• 4.4.3
• 4.4.4
• 5.0
• 5.1
• 5.1.2
• 5.1.3
• 5.2.0

License

• commercial

Website

• Vendor: https://www.cisco.com/

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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