In Splunk Enterprise for Windows versions below 9.0.8 and 9.1.3, Splunk Enterprise does not correctly sanitize path input data. This results in the unsafe deserialization of untrusted data from a separate disk partition on the machine. This vulnerability only affects Splunk Enterprise for Windows.
https://research.splunk.com/application/947d4d2e-1b64-41fc-b32a-736ddb88ce97/