Microsoft Issues Critical Update

Microsoft has fixed a critical security vulnerability affecting all supported versions of Windows.

In a security advisory Microsoft said all users of Windows 10 and earlier should patch as soon as possible to prevent attackers from exploiting a flaw in how the operating system handles graphics and fonts.

The patch fixes four separate vulnerabilities — the worst of which could let an attacker install malware on an affected computer.

It’s the fourth patch so far this year affecting every supported versions of Windows. Microsoft currently patches Windows Vista and later — including its latest operating system, Windows 10 — but leaves users of Windows XP at risk of infection.