Microsoft SharePoint contains a flaw related to a validation error when processing SOAP requests sent to the Document Conversions Launcher Service. The issue is triggered when a remote attacker uses a specially crafted request to upload an arbitrary file to an affected server. This may allow an attacker to execute arbitrary code.
Currently, there are no known workarounds or upgrades to correct this issue. However, Microsoft has released a patch to address this vulnerability. Check the vendor advisory or solution in the references section.