The td-agent-builder plugin before 2020-12-18 for Fluentd allows attackers to gain privileges because the bin directory is writable by a user account, but a file in bin is executed as NT AUTHORITY\SYSTEM.
https://www.debian.org/security/2021/dsa-4949
https://td-agent-package-browser.herokuapp.com/4/windows
https://github.com/kenhys/td-agent-builder/commit/eec6e2dedf12f2e0c01c2bbe7b8c15b639b3b938
https://github.com/fluent/fluentd/issues/3201
https://docs.fluentd.org/installation/install-by-msi
http://packetstormsecurity.com/files/160791/Fluentd-TD-agent-4.0.1-Insecure-Folder-Permission.html