Splunk Enterprise deployment servers in versions before 8.1.10.1, 8.2.6.1, and 9.0 let clients deploy forwarder bundles to other deployment clients through the deployment server. An attacker that compromised a Universal Forwarder endpoint could use the vulnerability to execute arbitrary code on all other Universal Forwarder endpoints subscribed to the deployment server.
https://www.splunk.com/en_us/product-security/announcements/svd-2022-0608.html
https://docs.splunk.com/Documentation/Splunk/9.0.0/Security/Updates