You can infect your PC with malware without ever leaving Notepad, thanks to recent updates and additions. Hooray.

The flaw exploits Notepad’s recently added support for Markdown, a formatting language used on websites and in files, to run malicious code on a Windows PC.

According to Microsoft's release notes, the update fixes 25 elevation of privilege flaws, 12 remote code execution vulnerabilities, three denial of service vulnerabilities, five security feature ...