A researcher has created a remote print server allowing any Windows user with limited privileges to gain complete control over a device simply by installing a print driver. This new method effectively allows anyone, including threat actors, to get administrative privileges. This technique is especially useful for threat actors who breach networks for the deployment of ransomware as it allows quick and easy access to administrative privileges on a device that helps them spread laterally through a network. Microsoft released a security update to fix the vulnerability, but researchers quickly figured out ways to bypass the patch under certain conditions.
Source: https://www.bleepingcomputer.com/news/microsoft/remote-print-server-gives-anyone-windows-admin-privileges-on-a-pc/