A security researcher named Jon Hat recently revealed that you could gain SYSTEM access on a PC by plugging in a Razer gaming mouse or dongle (via Neowin). If you have local access to a machine, plugging in a Razer device installs RazerInstaller.exe, which runs with SYSTEM privileges. It also allows someone to open Windows PowerShell and the File Explorer with elevated privileges. With this exploit, someone could install harmful software onto a computer.
Because of the nature of the vulnerability, a person requires physical access to a PC to exploit it. This makes it less dangerous than a vulnerability that can be exploited remotely, but it still leaves a security risk.
While separate, this Razer-related vulnerability has some characteristics in common with the PrintNightmare vulnerabilities on Windows 10. Both types of vulnerabilities rely on someone installing an item on a local account and gaining SYSTEM privileges despite not being an admin on a computer.
Hat explains that he reported the vulnerability to Razer but did not initially hear back from the company. Following this, Hat shared the vulnerability publicly. Since, Razer has responded to Hat, explaining that it is working on a fix.
Razer offered Hat a bounty for finding the vulnerability, even though it was disclosed publicly.