rcdsvc in the Proofpoint Insider Threat Management Windows Agent (formerly ObserveIT Windows Agent) before 7.9 allows remote authenticated users to execute arbitrary code as SYSTEM because of improper deserialization over named pipes.
https://www.proofpoint.com/us/security/security-advisories/pfpt-sa-2020-0002
https://www.proofpoint.com/us/blog
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8884