Name of the Vulnerable Software and Affected Versions Steam Client versions prior to 2019-09-12

Description The issue allows for the placement or appending of partially controlled filesystem content. This could be demonstrated by file modifications on Windows in the context of NT AUTHORITYSYSTEM, potentially leading to denial of service, elevation of privilege, or other unspecified impacts.

Recommendations For versions prior to 2019-09-12, update to a version released after 2019-09-12 to resolve the issue.