Microsoft has patched a complex bug that is affecting all versions of Windows. The company has released an off-schedule update to address security vulnerabilities. According to reports, the bug allows hackers to remotely run malicious code on computers running the Windows operating system. It was detected in a way that the Windows Adobe Type Manager library deals with fonts using the Microsoft OpenType format.

When exploited, the bug can give an attacker complete control over the system. Remote execution begins when a user visits a malicious website that contains OpenType fonts, or when users try to open a specially created document containing these fonts. The attacker can then install malicious programs on the system that manipulate the data in it. In addition, an attacker can even create a completely new user account on the Windows Run system, giving them full rights.

Almost every major version of Windows including Windows Vista, Windows 7, Windows 8, Windows RT, Windows 8.1, Windows RT 8.1, Windows 2012 and Windows Server 2008 was affected. Not only that, but even Windows 10 preview builds were affected. Bugs, such as older versions of Windows XP and Windows Server 2003. Note that neither Windows XP nor Windows Server 2003 is eligible for further updates from Microsoft.

The update will be downloaded automatically as long as you select the appropriate settings. If you do not, you can go here and download the relevant update to your PC.