https://blog.0patch.com/2021/01/local-privilege-escalation-0day-in.html
PSEXEC vulnerability! Must-read for admins who use it. Please note that you might not be aware that you use it since it is incorporated into some software products that interact with remote systems, so read it anyway!
0patch has issued a patch, Microsoft has not (yet). Only patches psexec v2.2!

Update: Microsoft released a new patched version. To use it against machines that you used the old version against, you need to launch this command 1st, or it will fail:
net stop psexesvc & sc delete psexesvc