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UC Software - Improper Restriction of Operations within the Bounds of a Memory Buffer

Vulnerability Summary

A medium-severity vulnerability has been discovered in the web application functionality of Poly’s UCS (“Unified Communications Software”). This vulnerability could allow an authenticated remote attacker to read a limited segment of the Poly product’s memory, which could reveal an administrator password or other sensitive information.  


A non-admin user of Poly voice products may be able to read a segment of the Poly product’s memory. This could reveal an administrator password, granting the non-admin user admin privileges. 


Last Update: 3/14/2022
Initial Public Release: 9/13/2017
Advisory ID:  PLYVC17-04

Product Affected
SoundStation IP Prior to UCS 4.0.12 UCS 4.0.12 and above
VVX Prior to UCS 5.6.0/  UCS 5.5.2/ UCS 5.4.7 UCS 5.6.0 and above
UCS 5.5.2 and above
UCS 5.4.7 and above
RealPresence Trio Prior to UCS 5.4.5 rev AG UCS 5.4.5 rev AG and above

Poly recommends customers upgrade to the respective build for the affected SoundStation IP, VVX, and Trio devices.



Poly recommends following standard best practices for Unified Communications, as detailed in our best practices paper.


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 Francis Alexander from Beyond Security’s SecuriTeam Secure Disclosure program for reporting security vulnerabilities to us and for their coordinated disclosure.

Revision History
1.0 8/21/2017 Initial Release
2.0 3/14/2022 Format Changes

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