Microsoft has revealed that hundreds of millions of Windows computers are vulnerable to an attack which could allow an attacker to remotely take control of their system.

The bug, which was uncovered by Microsoft itself, affects all modern versions of the company’s flagship operating system and according to a security advisory from the company, could potentially allow attackers exploiting it to remotely execute code on a victim’s machine. Microsoft says there is currently no evidence that the vulnerability is being exploited in the wild but without applying the patch, users are at serious risk of being attacked.

The vulnerability affects Windows servers but Microsoft also rates it as critical for client versions of Windows, with versions affected including:

Windows Server 2003
Windows Vista
Windows Server 2008
Windows 7
Windows Server 2008 R2
Windows 8 and Windows 8.1
Windows Server 2012 and Windows Server 2012 R2
Windows RT and Windows RT 8.1

Clients who are Advantage Pro and Premier subscribers will automatically have this patch applied to their¬†computers. Those who are not currently Advantage clients are urged to run Windows Updates as soon as possible to patch for this vulnerability.If you have any questions regarding how to go about updating your workstations and servers, please don’t hesitate to contact us.