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RPRM - Improper Restriction of XML External Entity Reference

Vulnerability Summary

A vulnerability was discovered in the firmware build 10.8.0 of RealPresence Resource Manager.  An attacker with access to the server can trigger an XXE attack, which can result in disclosure of data, port scanning, or



CVE 2020-12057 – RPRM Improper Restriction of XML External Entity Reference

A weakness in the XML parser for RPRM version 10.8.0 allows XML input from untrusted sources to process external entities resulting in an XXE attack.

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:  PLYUI22-04

CVE ID: CVE-2020-12057
CVSS Score: 6.5

Product Affected
RealPresence Resource Manager


Poly Clariti 10.10

Poly recommends customers upgrade RealPresence Resource Manager to Poly Clariti version 10.10 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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