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Trio 8800 - Improper Control of Generation of Code

Vulnerability Summary

A vulnerability was discovered in the firmware build of Trio 8800.  An exposed messaging service could allow an unauthenticated remote attacker to execute code and gain shell access with elevated privileges. 



CVE 2020-12056 – Trio 8800 Improper Control of Generation of Code

An API port allows unauthenticated communication with the device exposing remote code execution capabilities resulting in shell access with elevated privileges. A crafted request to this API allows the attacker to upload files, which can be leveraged to execute the code and results in a remote shell connection with elevated privileges.  

Poly released a firmware update to address this vulnerability.  There is no workaround.


Last Update:  9/16/2022
Initial Public Release:  9/16/2022
Advisory ID:  PLYVC22-02

CVE ID: CVE-2020-12056
CVSS Score: 10.0

Product Affected
Trio 8800

Poly UC Software

Poly UC Software 5.9.2
Trio 8500

Poly UC Software

Poly UC Software 5.9.2

Poly recommends customers upgrade to firmware build 5.9.2 or later.



There is no workaround.


Any customer using an affected system who is concerned about this vulnerability within their deployment should contact Poly Technical Support(888) 248-4143, (916) 928-7561, or visit the Poly Support Site.



Poly would like to thank Frank Cozijnsen and Arn Vollebregt from KPN RED team for reporting security vulnerabilities to us and for their coordinated disclosure.

Revision History
1.0 9/16/2022 Initial Release

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