ForceGiveBuff
ForceGiveBuff command
Applies a status effect to yourself or your current mount. Use the Admin Blink Rifle (Inspect Mode) or keyboard/mouse on PC, then run ListMyBuffs to look up the Buff IDs.
Using cheats on a server
On a multiplayer server, authenticate first with enablecheats <password>, and prefix admin commands with admincheat instead of cheat.